{ "dataset_version": "0.9", "dataset_date": "2026-08-12", "licence": { "metadata": "CC0 1.0 Universal (Public Domain Dedication)", "spdx": "CC0-1.0", "url": "https://creativecommons.org/publicdomain/zero/1.0/", "note": "Descriptive metadata and the census are dedicated to the public domain. Reuse them for anything, including commercially, without asking and without attribution — though a citation helps other people find the source. Written prose on the site is CC BY 4.0. Comparator photographs belong to the institutions that made them and carry the terms stated on each comparator record." }, "type": "claims", "count": 18, "active": 18, "superseded": 0, "withdrawn": 0, "without_evidence": 0, "confidence_note": "Confidence describes the quality of the evidence under a claim and nothing else. It is not a measure of how much the project would like the claim to be true.", "records": [ { "id": "CL-ARTIST", "subject": "np-rmb-001", "category": "identification", "field": "Artist", "value": "Rembrandt Harmenszoon van Rijn (1606–1669)", "confidence": "strongly_supported", "evidence_ids": [ "EV-NH-170", "EV-LOT-182", "EV-ACQ-INVOICE" ], "stated_by": "Bonhams, as cataloguer, citing New Hollstein 170", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "An examination by a specialist in Old Master prints concluding that the sheet is a later restrike from Rembrandt's plate, a reproduction after the composition, or a copy by another hand. Any of these would keep the composition and change the object.", "note": "The composition is securely Rembrandt's: the catalogue raisonné entry for no. 170 is in hand. What that does not settle is who did the work visible in this particular impression — see the state claim below, where the catalogue is explicit that the third state is not Rembrandt's work.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." }, { "id": "EV-ACQ-INVOICE", "tier": "primary_document", "kind": "document", "title": "Bonhams payment receipt, 17 May 2023, transaction 1246701, sale 28358 lot 182", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05-17", "url": null, "excerpt": "REMBRANDT: SELF PORTRAIT IN A VELVET CAP WITH PLUME. VAN RIJN, REMBRANDT HARMENSZOON. 1606-1669. Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper.", "bibliography_id": null, "access": "on_request", "access_note": "The receipt carries the buyer's name, address, contact details, client and payment numbers, and the sum paid. None of that is published or held in this database. The sale number, lot number and date have been transcribed from it into the record; a copy redacted to those fields can be supplied to a scholar or institution.", "rights": null, "added": "2026-08-12", "notes": "Transcribed 12 August 2026. It fixes the acquisition to a named sale and lot, which is what closed the search recorded under RQ-08." } ] }, { "id": "CL-TITLE", "subject": "np-rmb-001", "category": "identification", "field": "Title", "value": "Self-Portrait in a Velvet Cap with Plume", "confidence": "confirmed", "evidence_ids": [ "EV-NH-170" ], "stated_by": "New Hollstein 170", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": null, "note": "The title used by the catalogue raisonné, and by the Rijksmuseum, the Met, the National Gallery of Art and the Art Institute. The census still records each institution's own wording verbatim.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." } ] }, { "id": "CL-DATE", "subject": "np-rmb-001", "category": "identification", "field": "Date of the plate", "value": "1638", "confidence": "confirmed", "evidence_ids": [ "EV-NH-170" ], "stated_by": "New Hollstein 170", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": null, "note": "New Hollstein dates the plate 1638 and records it signed and dated in the plate, upper left: Rembrandt f 1638. This is the date Rembrandt worked the copper. It is not the date this sheet was printed, and the two are now known to be far apart.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." } ] }, { "id": "CL-PRINTING-DATE", "subject": "np-rmb-001", "category": "identification", "field": "Date of printing of this sheet", "value": "Unknown. Later than Rembrandt's lifetime only if the state III attribution holds", "confidence": "unknown", "evidence_ids": [ "EV-NH-170", "EV-LOT-182", "EV-NO-CONSERVATOR" ], "stated_by": null, "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "A specialist's state determination. If state II, the sheet is from the plate as Rembrandt left it. If state III, it is a later pull from a reworked plate.", "note": "No date is asserted. The catalogue establishes that the work visible in state III is not Rembrandt's, so an impression in that state was pulled after the plate had been reworked — but it does not establish that this sheet is in state III, and a conditional does not become a date. The copper plate's own descent, which is documented, bounds where a later impression could have been printed; that is on the provenance timeline.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." }, { "id": "EV-NO-CONSERVATOR", "tier": "physical_observation", "kind": "opinion", "title": "No conservator examination has taken place", "author": null, "date": "2026-08-12", "url": null, "excerpt": null, "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "Recorded as an explicit negative so that the absence is visible rather than inferred from silence. No paper conservator has examined the sheet, and no technical imaging — transmitted light, raking light, ultraviolet, magnification — has been carried out. The auction house's condition photographs do not substitute for any of it." } ] }, { "id": "CL-CATREF-BARTSCH", "subject": "np-rmb-001", "category": "identification", "field": "Catalogue reference (Bartsch)", "value": "Bartsch 20", "confidence": "confirmed", "evidence_ids": [ "EV-NH-170", "EV-LOT-182" ], "stated_by": null, "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": null, "note": "Confirmed against the catalogue's own concordance, which gives B. 20 alongside G. 25, M. 134, H. 156, Mz. 22, BB. 38-B and W-B. 20.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." } ] }, { "id": "CL-CATREF-NH", "subject": "np-rmb-001", "category": "identification", "field": "Catalogue reference (New Hollstein)", "value": "New Hollstein 170", "confidence": "confirmed", "evidence_ids": [ "EV-NH-170", "EV-LOT-182" ], "stated_by": null, "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": null, "note": "Verified against the catalogue entry itself, which the project now holds in photographic form.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." } ] }, { "id": "CL-MEDIUM", "subject": "np-rmb-001", "category": "material_technique", "field": "Medium", "value": "Drypoint etching, on laid paper", "confidence": "strongly_supported", "evidence_ids": [ "EV-NH-170", "EV-LOT-182" ], "stated_by": "New Hollstein 170; Bonhams, as cataloguer", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "Examination under magnification of this impression, to establish whether any drypoint burr survives in it — which is a different question from whether the plate carries drypoint work.", "note": "New Hollstein calls the plate an etching; the auction cataloguer calls this sheet a drypoint etching; the Rijksmuseum records its impressions as etching and drypoint. All three can be true of the same plate. Whether burr survives in this particular impression is untested, and in a late state it is unlikely.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." } ] }, { "id": "CL-SUPPORT", "subject": "np-rmb-001", "category": "material_technique", "field": "Support", "value": "Laid paper", "confidence": "strongly_supported", "evidence_ids": [ "EV-NH-170", "EV-LOT-182" ], "stated_by": null, "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "Transmitted-light examination showing chain and laid lines, which would confirm laid paper and give measurable chain-line spacing.", "note": "Recorded as laid paper by both the catalogue and the auction cataloguer. Transmitted light would confirm it directly and would also give chain-line spacing, which no source supplies.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." } ] }, { "id": "CL-WATERMARK", "subject": "np-rmb-001", "category": "material_technique", "field": "Watermark", "value": "Not examined; the catalogue records no watermarks for this state", "confidence": "unknown", "evidence_ids": [ "EV-NO-CONSERVATOR", "EV-NH-170" ], "stated_by": null, "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "Transmitted-light imaging of the sheet.", "note": "New Hollstein lists watermark editions for states I and II — Strasbourg lily, Arms of Bristol, Arms of Ravensburg, Basel crosier, Basilisk, Foolscap and variants — and lists none at all for states III and IV. So even a clear watermark here would have nothing in the catalogue to be matched against, and would be new information rather than a confirmation.", "evidence": [ { "id": "EV-NO-CONSERVATOR", "tier": "physical_observation", "kind": "opinion", "title": "No conservator examination has taken place", "author": null, "date": "2026-08-12", "url": null, "excerpt": null, "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "Recorded as an explicit negative so that the absence is visible rather than inferred from silence. No paper conservator has examined the sheet, and no technical imaging — transmitted light, raking light, ultraviolet, magnification — has been carried out. The auction house's condition photographs do not substitute for any of it." }, { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." } ] }, { "id": "CL-STATE", "subject": "np-rmb-001", "category": "state", "field": "State", "value": "Catalogued by the auction house as New Hollstein 170, state III of IV; state II not excluded", "confidence": "possible", "evidence_ids": [ "EV-LOT-182", "EV-NH-170", "EV-CONDITION-PHOTOS" ], "stated_by": "Bonhams, as cataloguer, citing New Hollstein 170", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "A specialist in Old Master prints examining the sheet against the catalogue's diagnostic features for states II and III — the cross-hatching at the base of the feather and along the brim of the cap, the curved lines on the forehead carried over the brim, the horizontal shading on the right ear.", "note": "The cataloguer's determination reads: “New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).” Two grounds are given and one of them does not discriminate: the catalogue's reproduction of state II does not show the signature clearly either, so an absent signature narrows the sheet to state II or III and no further. What remains is the scratch and the cataloguer's reading of the line-work, neither of which anyone else has checked. State II is the most numerous state of this plate and the only one White & Boon recognised; it has not been excluded. The record carries the house's determination, attributed to the house, at the confidence a single unreviewed reading supports.", "evidence": [ { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." }, { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-CONDITION-PHOTOS", "tier": "auction_catalogue", "kind": "photograph", "title": "Condition-report photographs of the sheet, recto and verso, supplied by the auction house", "author": "Bonhams", "date": "2023-05-03", "url": null, "excerpt": null, "bibliography_id": null, "access": "on_request", "access_note": "Two photographs of the sheet, recto and verso, made by the auction house for a pre-sale condition request. They are the only images of this impression that exist. Their copyright position has not been established with the house, so they are not published here; they can be shown to a scholar or institution on request.", "rights": "Photographs by the auction house; rights position to be confirmed before publication.", "added": "2026-08-12", "notes": "These are not a conservator's documentation: they are hand-held photographs on a cloth ground, without a scale, a colour target or controlled lighting. They are nevertheless the first direct visual evidence of the sheet the project has held, and they settle several questions the record had open — most usefully that the verso carries no visible collector's mark or inscription." } ] }, { "id": "CL-DIMENSIONS", "subject": "np-rmb-001", "category": "dimensions", "field": "Dimensions", "value": "Sheet approximately 137 × 104 mm; plate 134 × 103 mm", "confidence": "probable", "evidence_ids": [ "EV-NH-170", "EV-LOT-182" ], "stated_by": null, "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "Remeasurement under a conservation protocol, recording plate mark and sheet separately and noting which edges retain a plate mark.", "note": "The apparent impossibility in the first version of this record — a trimmed sheet larger than the plate — was an artefact of comparing two different measurements. New Hollstein gives the plate as 13.4 × 10.3 cm. The auction cataloguer measured the sheet, at 137 × 104 mm. A sheet a few millimetres larger than the plate, trimmed hard on one edge and retaining a margin on the others, is exactly what the photographs show.", "evidence": [ { "id": "EV-NH-170", "tier": "institutional_record", "kind": "publication", "title": "New Hollstein Dutch & Flemish, Rembrandt, no. 170, pp. 31–32 and plates 84–87", "author": "Erik Hinterding and Jaco Rutgers", "date": "2013", "url": null, "excerpt": "Probably rebitten; many lines stronger and broader than in early impressions. Work on the cap strengthened, for instance, cross-hatching added at the base of the feather and along the brim of the cap above the eyes. … Not by Rembrandt.", "bibliography_id": "new-hollstein-rembrandt", "access": "on_request", "access_note": "The project holds photographs of the catalogue entry and its plates, supplied with the auction house's condition report. The volumes themselves are not held; a scholar wanting the entry should consult the published catalogue.", "rights": "Text quoted for scholarly purposes; copyright the publisher.", "added": "2026-08-12", "notes": "The standard catalogue entry for this plate, and the source this record spent its first day working without. It supplies the four state descriptions in the catalogue's own words, the impressions listed in each state, the watermark editions, the copperplate's provenance, and reproductions of each state — which is how the state III attribution for this sheet becomes checkable rather than merely asserted." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." } ] }, { "id": "CL-CONDITION-SUMMARY", "subject": "np-rmb-001", "category": "condition", "field": "Condition summary", "value": "Trimmed at the left margin; wrinkling and dampstaining at lower left, extending partly into the image; unmounted at purchase", "confidence": "strongly_supported", "evidence_ids": [ "EV-LOT-182", "EV-CONDITION-PHOTOS" ], "stated_by": "Bonhams, as cataloguer", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "A condition report by a paper conservator, which would replace this summary field by field and add severity, extent and stability assessments this record cannot make.", "note": "The catalogue's wording, verbatim: “Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted.” The photographs corroborate all four observations and add a diagonal tideline across the lower half of the sheet, visible from the verso. It remains a sale description rather than a conservator's report, and it will be superseded by one.", "evidence": [ { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." }, { "id": "EV-CONDITION-PHOTOS", "tier": "auction_catalogue", "kind": "photograph", "title": "Condition-report photographs of the sheet, recto and verso, supplied by the auction house", "author": "Bonhams", "date": "2023-05-03", "url": null, "excerpt": null, "bibliography_id": null, "access": "on_request", "access_note": "Two photographs of the sheet, recto and verso, made by the auction house for a pre-sale condition request. They are the only images of this impression that exist. Their copyright position has not been established with the house, so they are not published here; they can be shown to a scholar or institution on request.", "rights": "Photographs by the auction house; rights position to be confirmed before publication.", "added": "2026-08-12", "notes": "These are not a conservator's documentation: they are hand-held photographs on a cloth ground, without a scale, a colour target or controlled lighting. They are nevertheless the first direct visual evidence of the sheet the project has held, and they settle several questions the record had open — most usefully that the verso carries no visible collector's mark or inscription." } ] }, { "id": "CL-MARKS", "subject": "np-rmb-001", "category": "inscriptions_marks", "field": "Collector marks and inscriptions", "value": "No collector's mark, stamp or inscription visible on either side", "confidence": "probable", "evidence_ids": [ "EV-CONDITION-PHOTOS" ], "stated_by": null, "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "Examination under ultraviolet or raking light, which can reveal a faded stamp or an erased inscription that a hand-held photograph will not show.", "note": "The verso has now been seen. It is blank apart from a diagonal tideline and general handling marks — no stamp, no pencil annotation, no dealer's code, no mount or hinge remnant. That is a genuine negative finding and it closes the most likely route into the sheet's earlier ownership.", "evidence": [ { "id": "EV-CONDITION-PHOTOS", "tier": "auction_catalogue", "kind": "photograph", "title": "Condition-report photographs of the sheet, recto and verso, supplied by the auction house", "author": "Bonhams", "date": "2023-05-03", "url": null, "excerpt": null, "bibliography_id": null, "access": "on_request", "access_note": "Two photographs of the sheet, recto and verso, made by the auction house for a pre-sale condition request. They are the only images of this impression that exist. Their copyright position has not been established with the house, so they are not published here; they can be shown to a scholar or institution on request.", "rights": "Photographs by the auction house; rights position to be confirmed before publication.", "added": "2026-08-12", "notes": "These are not a conservator's documentation: they are hand-held photographs on a cloth ground, without a scale, a colour target or controlled lighting. They are nevertheless the first direct visual evidence of the sheet the project has held, and they settle several questions the record had open — most usefully that the verso carries no visible collector's mark or inscription." } ] }, { "id": "CL-ACQUISITION", "subject": "np-rmb-001", "category": "acquisition", "field": "Acquisition", "value": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "confidence": "confirmed", "evidence_ids": [ "EV-ACQ-INVOICE", "EV-LOT-182" ], "stated_by": "Owner", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": null, "note": "Transcribed from the payment receipt and confirmed against the published lot page. The sale was online only; the department's specialists were Ian Ehling, Darren Sutherland and Tim Tezer. The consignor is not named in the catalogue and is not known to the project.", "evidence": [ { "id": "EV-ACQ-INVOICE", "tier": "primary_document", "kind": "document", "title": "Bonhams payment receipt, 17 May 2023, transaction 1246701, sale 28358 lot 182", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05-17", "url": null, "excerpt": "REMBRANDT: SELF PORTRAIT IN A VELVET CAP WITH PLUME. VAN RIJN, REMBRANDT HARMENSZOON. 1606-1669. Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper.", "bibliography_id": null, "access": "on_request", "access_note": "The receipt carries the buyer's name, address, contact details, client and payment numbers, and the sum paid. None of that is published or held in this database. The sale number, lot number and date have been transcribed from it into the record; a copy redacted to those fields can be supplied to a scholar or institution.", "rights": null, "added": "2026-08-12", "notes": "Transcribed 12 August 2026. It fixes the acquisition to a named sale and lot, which is what closed the search recorded under RQ-08." }, { "id": "EV-LOT-182", "tier": "auction_catalogue", "kind": "catalogue_record", "title": "Bonhams, Fine Books and Manuscripts, sale 28358, lot 182, New York, 24 April – 4 May 2023", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05", "url": "https://www.bonhams.com/auction/28358/lot/182/rembrandt-self-portrait-in-a-velvet-cap-with-plume-van-rijn-rembrandt-harmenszoon-1606-1669-drypoint-etching-137-x-104-mm-unsigned-and-undated-but-1638-on-laid-paper/", "excerpt": "Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper. Left margin roughly trimmed, some wrinkling, dampstaining to lower left corner, including part of image. Unmounted. Bartsch 20; New Hollstein 170, state III (of IV, without signature, diagonal scratch in plate at upper left only slightly visible).", "bibliography_id": null, "access": "public", "access_note": null, "rights": null, "added": "2026-08-12", "notes": "The catalogue entry the sheet was sold under, and the source of every phrase in the owner's working record. It is a cataloguer's determination made under time pressure rather than a scholarly one, and it is weighted accordingly — but it is specific, it names its diagnostic features, and it can now be checked against the catalogue it cites. Note that the page is publicly reachable at the URL above; the house's own site search does not return it, which is why an earlier search of this archive recorded a false negative." } ] }, { "id": "CL-CUSTODY", "subject": "np-rmb-001", "category": "provenance", "field": "Current custody", "value": "Private collection, Dubai, United Arab Emirates", "confidence": "confirmed", "evidence_ids": [ "EV-ACQ-INVOICE" ], "stated_by": "Owner", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": null, "note": "Stated at city level by policy. Storage location, address, security arrangements and insurance values are not published and are not held in this database. See the security and privacy policy.", "evidence": [ { "id": "EV-ACQ-INVOICE", "tier": "primary_document", "kind": "document", "title": "Bonhams payment receipt, 17 May 2023, transaction 1246701, sale 28358 lot 182", "author": "Bonhams & Butterfields Auctioneers Corp.", "date": "2023-05-17", "url": null, "excerpt": "REMBRANDT: SELF PORTRAIT IN A VELVET CAP WITH PLUME. VAN RIJN, REMBRANDT HARMENSZOON. 1606-1669. Drypoint etching, 137 x 104 mm, unsigned and undated (but 1638), on laid paper.", "bibliography_id": null, "access": "on_request", "access_note": "The receipt carries the buyer's name, address, contact details, client and payment numbers, and the sum paid. None of that is published or held in this database. The sale number, lot number and date have been transcribed from it into the record; a copy redacted to those fields can be supplied to a scholar or institution.", "rights": null, "added": "2026-08-12", "notes": "Transcribed 12 August 2026. It fixes the acquisition to a named sale and lot, which is what closed the search recorded under RQ-08." } ] }, { "id": "CL-EARLIER-PROVENANCE", "subject": "np-rmb-001", "category": "provenance", "field": "Ownership before 2023", "value": "Private collection, Germany, consigned through a European antiquarian dealer; nothing documented before that", "confidence": "probable", "evidence_ids": [ "EV-BONHAMS-EMAIL" ], "stated_by": "Darren Sutherland, Senior Specialist, Bonhams", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "The house or the dealer agreeing to name the collection, or a mark or document that places the sheet earlier.", "note": "The auction house's specialist named the consignment route in correspondence but declined to identify the collection. How long the sheet was in Germany, and where it was before, remain unknown. The verso carries no collector's mark to work back from.", "evidence": [ { "id": "EV-BONHAMS-EMAIL", "tier": "specialist_opinion", "kind": "correspondence", "title": "Correspondence with Darren Sutherland, Senior Specialist, Fine Books and Manuscripts, Bonhams, 23 May 2023", "author": "Darren Sutherland, Bonhams", "date": "2023-05-23", "url": null, "excerpt": "The work was consigned by a European antiquarian dealer, from a Private Collection in Germany.", "bibliography_id": null, "access": "on_request", "access_note": "Held by the owner. The substantive content — the consignment route and the catalogue description — is transcribed into this record.", "rights": null, "added": "2026-08-12", "notes": "The department specialist's own account of where the sheet came from, which the printed catalogue entry does not give. He also confirms what was supplied with the lot: the invoice, condition-report images, the catalogue description with references, and scans of the relevant New Hollstein pages. No certificate of authenticity and no independent expert opinion were provided, and none was claimed." } ] }, { "id": "CL-RIGHTS-METADATA", "subject": "np-rmb-001", "category": "rights", "field": "Metadata rights", "value": "CC0 1.0 Universal — no rights reserved over the descriptive metadata", "confidence": "confirmed", "evidence_ids": [ "EV-PROJECT-POLICY" ], "stated_by": "Project", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": null, "note": "Metadata is released without restriction so that it can be reused, aggregated and corrected by anyone. The written text of the site is CC BY 4.0.", "evidence": [ { "id": "EV-PROJECT-POLICY", "tier": "primary_document", "kind": "document", "title": "Rights and licensing policy of this project", "author": "The Plate Mark", "date": "2026-08-12", "url": "https://theplatemark.com/about/rights-and-licensing", "excerpt": null, "bibliography_id": null, "access": "public", "access_note": null, "rights": "CC BY 4.0", "added": "2026-08-12", "notes": "The project's own published statement of the terms it releases its material under. It is primary evidence for claims about licensing and for nothing else." } ] }, { "id": "CL-RIGHTS-IMAGES", "subject": "np-rmb-001", "category": "rights", "field": "Image rights", "value": "No image of this impression is published", "confidence": "confirmed", "evidence_ids": [ "EV-CONDITION-PHOTOS", "EV-PROJECT-POLICY" ], "stated_by": "Project", "reviewed_by": null, "added": "2026-08-12", "last_verified": "2026-08-12", "supersedes": [], "status": "active", "what_would_change_it": "Written confirmation from the auction house that its condition photographs may be published with credit, or documentary imaging of the sheet.", "note": "The underlying work is in the public domain. Photographs of this sheet do exist — the auction house made two for a condition report in 2023 and the project holds them — but their copyright is the house's, not the owner's, and it has not been established. They are therefore not published, and can be shown to a scholar or institution on request. No documentary imaging to a photographic standard has been made.", "evidence": [ { "id": "EV-CONDITION-PHOTOS", "tier": "auction_catalogue", "kind": "photograph", "title": "Condition-report photographs of the sheet, recto and verso, supplied by the auction house", "author": "Bonhams", "date": "2023-05-03", "url": null, "excerpt": null, "bibliography_id": null, "access": "on_request", "access_note": "Two photographs of the sheet, recto and verso, made by the auction house for a pre-sale condition request. They are the only images of this impression that exist. Their copyright position has not been established with the house, so they are not published here; they can be shown to a scholar or institution on request.", "rights": "Photographs by the auction house; rights position to be confirmed before publication.", "added": "2026-08-12", "notes": "These are not a conservator's documentation: they are hand-held photographs on a cloth ground, without a scale, a colour target or controlled lighting. They are nevertheless the first direct visual evidence of the sheet the project has held, and they settle several questions the record had open — most usefully that the verso carries no visible collector's mark or inscription." }, { "id": "EV-PROJECT-POLICY", "tier": "primary_document", "kind": "document", "title": "Rights and licensing policy of this project", "author": "The Plate Mark", "date": "2026-08-12", "url": "https://theplatemark.com/about/rights-and-licensing", "excerpt": null, "bibliography_id": null, "access": "public", "access_note": null, "rights": "CC BY 4.0", "added": "2026-08-12", "notes": "The project's own published statement of the terms it releases its material under. It is primary evidence for claims about licensing and for nothing else." } ] } ] }