OpenTwo archives, queried live.
Every record below comes from The Met or Smithsonian Open Access and was filtered on that archive’s own rights field before it reached this page. 24 shown for “12c S.S. Adriatic card plate proof” — 64 records examined, 9 dropped by the rights gate.
Archives queried 2026-08-31 23:18 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Mechanical table
Jean-François Oeben · ca. 1761–63
12c S.S. Adriatic card plate proof
Artist not stated in the record · 1893
Washstand (athénienne or lavabo)
Charles Percier · 1800–1814
12c S.S. Adriatic plate proof single
National Bank Note Company · 1869
Casket with Erotes and Animals
Artist not stated in the record · 12th century
12c S.S. Adriatic plate proof single
National Bank Note Company · 1869
J.A.D. Ingres, calling card
Anonymous · ca. 1824–67
12c S.S. Adriatic re-issue single
National Bank Note Company · 1875
James McNeill Whistler, calling card
Anonymous · ca. 1881–1903
12c S.S. Adriatic G Grill single
National Bank Note Company · 1869
George Cruikshank, calling card
Anonymous · ca. 1830–78
12c S.S. Adriatic re-issue single
National Bank Note Company · 1875
Armor
Artist not stated in the record · ca. 1400–1450 and later
12c S.S. Arawa die proof
American Bank Note Company · 1894
Trade Card for C. F. Partington, Printer
John Shury · 1832
12c Post Office Department card plate proof
Artist not stated in the record · 1879-1894
Brigandine Armor
Artist not stated in the record · ca. 1400 and later
12c Henry Clay Justice Department card plate proof
Artist not stated in the record · 1879-1894
Trade Card for William Darling, Engraver
Anonymous, British, 18th century · 18th century
12c Henry Clay War Department card plate proof
Artist not stated in the record · 1879-1894
Trade Card for Josh Cross, Seal and Copper Plate Engraver
Anonymous, British, 19th century · 19th century
12c Henry Clay Treasury Department card plate proof
Artist not stated in the record · 1879-1894
Trade Card for Croydon, Printer, Bookseller, and Umbrella Maker
T. Rickard · 19th century
12c Henry Clay State Department card plate proof
Artist not stated in the record · 1879-1894
Where these records came from.
Two archives are wired, and only two. Each one is filtered on its own rights field — never on a title match, and never on the presence of an image file.
- The Met Collection API (Open Access)Rights field:
isPublicDomain. 77 matched · 24 examined · 9 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.12 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 531632 matched · 40 examined · 0 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.12 shown
These figures describe the pass run at 2026-08-31 23:18 UTC, during this request. A completed pass is kept for 24 hours and replayed for an identical search, which is what keeps repeated queries inside Smithsonian’s 30-requests-per-hour allowance. A pass in which either archive failed to answer is never kept — an outage must not be replayed as though it were a finding about the catalogue.
Wikimedia Commons and the Library of Congress are deliberately not wired. Wikimedia was confirmed, on a live query, to return CC-BY material inside the same result set as genuine public domain works, and filtering it safely has not been designed yet. loc.gov was blocked by bot detection during the source evaluation, so its rights vocabulary has never been observed — and nothing here is built on a field nobody has read.
An image file is a rights claim. It never travels without its field.