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. 12 shown for “Clock case” — 24 records examined, 2 dropped by the rights gate.
Archives queried 2026-09-03 11:09 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.Smithsonian Open Access: HTTP 429 from api.si.edu. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.

Clock
Dubuc · 1815–20

Clock case
Meissen Manufactory · case ca. 1728–30, movement ca. 1830–50

Clock case
Artist not stated in the record · 17th century

Tall Clock
Thomas Seymour · 1805–10

Wall clock (cartel)
Etienne LeNoir · ca. 1735–40

Clock case and vase
George E. Ohr · 1898

Clock
Jean-Baptiste Lepaute · ca. 1775–80

Tall clock
John Townsend · 1789

Table clock with calendar
Lucien Falize · 1881

Mantel clock (horloge de cheminée)
Jean-Joseph de Saint Germain · ca. 1745

Clock
David Roentgen · ca. 1780–90

The Rape of Europa and Mercury and the Three Graces
Lambertus Vrythoff · case ca. 1645, movement ca. 1750
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. 270 matched · 24 examined · 2 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. HTTP 429 from api.si.edu. No records from this archive are shown for this query.Unavailable
These figures describe the pass run at 2026-09-03 11:09 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.