Two 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 “Allen Hand Windlass, Demonstration Model” — 64 records examined, 8 dropped by the rights gate.
Archives queried 2026-09-05 23:23 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Siren
Colonna · ca. 1600

Allen Hand Windlass, Demonstration Model
Artist not stated in the record · 1876

Saint Matthew
Antonio Susini · 1596

Allen's Hand Windlass, Patent Model
Artist not stated in the record · 1876

Saint John
Antonio Susini · 1596

Demonstration Model, American Steam Capstan Windlass, 1883
Artist not stated in the record · 1883

The risen Christ
Antonio Susini · 1596

Model, Providence Steam Pump-brake Windlass, 1884
Artist not stated in the record · 1884

The Sacrifice of Jephthah's Daughter
Massimiliano Soldani · modeled 1722, probably cast 1730–35

Capstan, Patent Model
Artist not stated in the record · 1886

Apollo with lyre
Tiziano Aspetti · 17th century (?)

Demonstration Model, Life Raft, 1881
Artist not stated in the record · ca 1881

Saint Sebastian
Pietro Tacca · statuette: 17th century; trunk: 19th century or later

Patent Model of a Hand Stamp
Artist not stated in the record · ca 1857

Venus and Cupid
Tiziano Aspetti · 19th century

Patent Model for a Hand Stamp
Ramsay, P. A. · 1857

Saint Sebastian
Alessandro Vittoria (Alessandro Vittoria di Vigilio della Volpa) · 1566

Patent Mode for a Hand Stamp
Rountree, George H. · ca 1873

Christ Crowned with Thorns (Ecce Homo), and the Mourning Virgin (Mater Dolorosa)
Adriaen Isenbrant · ca. 1530–40

Patent Model for a Hand Stamp
Elliot, William H. · 1857

The Annunciation
Petrus Christus · ca. 1445

Patent Model of a Hand Stamp
Artist not stated in the record · ca 1864

The Annunciation
Hans Memling · 1480–89

Patent Model of a Hand Operated Printing Press
Dean, George R. · ca 1861
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. 61 matched · 24 examined · 0 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. 80461 matched · 40 examined · 8 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 2026-09-05 23:23 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.