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 “Relief plaque with a swallow” — 64 records examined, 23 dropped by the rights gate.
Archives queried 2026-08-27 21:06 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Relief plaque with a swallow
Artist not stated in the record · 400–30 BCE
Four Continents
Artist not stated in the record · ca. 1770
Plaque
Caroline H. Rimmer · ca. 1895–1900
Four Continents
Artist not stated in the record · ca. 1770
Plaque
Chelsea Keramic Art Works · ca. 1878–82
Four Continents
Artist not stated in the record · ca. 1770
Ivory decorative plaque
Artist not stated in the record · 2nd half of 7th century BCE
Four Continents
Artist not stated in the record · ca. 1770
Relief plaque with two swallows, opposite side two quail chicks
Artist not stated in the record · 400–30 BCE
Framed plaque
John Turner, Lane End, Staffordshire, England, 1759 - 1780 · ca. 1780
Plaque with the Descent from the Cross
Artist not stated in the record · ca. 1320–40
Rookwood
Rookwood Pottery, American, 1880 - 1967 · 1903–13
Plaque with equestrian ọ́bà (king) and attendants
Ìgùn Ẹ́rọ̀nwwọ̀n (brass-casting guild) artists · ca. 1540–70
Plaque
Thomas Bentley, English, 1730 – 1780 · ca. 1778
Crib of the Infant Jesus
Artist not stated in the record · 15th century
Knife
Artist not stated in the record · ca. 1870–80
Relief with enthroned ruler
Chakalte' · 770 CE
Cornerstone plaque from the Bank of Finance
Bank of Finance, American, 1964 - 1981 · 1964
Terracotta plaque
Artist not stated in the record · ca. 450 BCE
America
Artist not stated in the record · ca. 1750
Relief plaque with birds on both sides
Artist not stated in the record · ca. 400–30 BCE
Designs for Three Pedestals
Jean-Charles Delafosse, French, 1734 – 1789 · 1770–80
Terracotta plaque
Artist not stated in the record · ca. 460–450 BCE
Audelco best musical production award for Champeen awarded to Melvin Van Peebles
Artist not stated in the record · November 21, 1983
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. 456 matched · 24 examined · 1 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. 1871193 matched · 40 examined · 22 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 2026-08-27 21:06 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.