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 “Bronze as of Antoninus Pius” — 63 records examined, 19 dropped by the rights gate.
Archives queried 2026-08-28 20:50 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Bronze as of Antoninus Pius
Artist not stated in the record · 143–144 CE

Lupinus antoninus Eastw.
Artist not stated in the record · 8 Aug 1943

Emperor Antoninus Pius
Antico (Pier Jacopo Alari Bonacolsi) · 1519–24

Design for a gate, for the reception of Pope Pius VI returning from Germany, in Ancona
Filippo Marchionni, Italian, 1732–1805 · May 1782

Marble portrait of the emperor Antoninus Pius
Artist not stated in the record · ca. 138–161 CE

Lupinus antoninus Eastw.
Artist not stated in the record · 10 Jul 1941

Stucco relief fragment
Artist not stated in the record · ca. 138–161 CE

Portrait of Pius VI (1717-1799)
Artist not stated in the record · ca. 1783

Gold aureus of Antoninus Pius
Artist not stated in the record · 141 CE

Design for Parts of a Coach
Artist not stated in the record · 1835–40

Marble portrait of the emperor Caracalla
Artist not stated in the record · 212–217 CE

Design for an Embroidered Altar Front
Artist not stated in the record · 1800–23

Christ and the Two Thieves Crucified
Michelangelo Buonarroti · ca. 1560–70

Altar Tablet with the Arms of Pope Pius VII
Luigi Righetti, Italian, 1780 - 1819 · ca. 1820

Bronze military diploma
Artist not stated in the record · ca. 149 CE

Altar Tablet with the Arms of Pope Pius VII
Luigi Righetti, Italian, 1780 - 1819 · ca. 1820

Hercules and Antaeus
Artist not stated in the record · probably 19th century

Portrait of Pius VI (1775-1799)
Artist not stated in the record · 1790-1800

Marble portrait bust of Antoninus Pius
Artist not stated in the record · 2nd century CE
![Crucifixion with the Four Evangelists [left]; Saint Bridget [right, above]; Hospital Scene [right, below], by Jan van der Straet, called Stradanus, Flemish, 1523–1605](/_next/image?url=https%3A%2F%2Fids.si.edu%2Fids%2Fdownload%3Fid%3DCHSDM-7917_02-000001.jpg&w=3840&q=75)
Crucifixion with the Four Evangelists [left]; Saint Bridget [right, above]; Hospital Scene [right, below]
Jan van der Straet, called Stradanus, Flemish, 1523–1605 · ca. 1580 – 1605

Madonna and Child
Benvenuto di Giovanni · ca. 1475–85

Monument to Pope Pius VIII
Artist not stated in the record · 18th century

Marble portrait of Matidia Minor
Artist not stated in the record · ca. 138–161 CE

Portrait of Pope Pius VIII (1829-1830)
Artist not stated in the record · ca. 1820-1830
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. 23 matched · 23 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. 2872730 matched · 40 examined · 19 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 2026-08-28 20:50 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.