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 “Reverse Cassetta frame” — 64 records examined, 9 dropped by the rights gate.
Archives queried 2026-08-31 11:46 UTC · served from cache, not re-queried for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Reverse cassetta frame
Artist not stated in the record · ca. 1630
Pleated fan
Charles Bour, French, 1814–1881 · mid- 19th century
Reverse cassetta frame
Artist not stated in the record · 1630–40
"Chuck Luck Pocket Match Safe and Dice Box"
Artist not stated in the record · patented 1893
Reverse cassetta frame
Artist not stated in the record · ca. 1640
Sketches for paintings. Obverse: A Roman officer holds a crucifix upon a heathen altar. Reverse: Christ rising
Pasqualino Marini · ca. 1700
Reverse cassetta frame
Artist not stated in the record · ca. 1640
Pair of Armchairs
John Henry Belter, American, b. Germany, 1804 – 1863 · design: 1850; Crest decoration design: 1849
Reverse cassetta frame
Artist not stated in the record · mid-17th century
Tile
J. & J. G. Low Art Tile Works, 1877 – 1883 · late 19th century
Reverse Cassetta frame
Artist not stated in the record · mid-17th century
Aluminum with Glass Beads
Artist not stated in the record · ca. 1898
Reverse cassetta frame
Artist not stated in the record · 1630–40
Project: decoration with escutcheons, (A) of a square, (B) of a horizontally oblong panel
Artist not stated in the record · 1600–1625
Reverse cassetta mirror frame
Artist not stated in the record · ca. 1950 (style 17th century)
Fragment
Artist not stated in the record · late 17th–early 18th century
Reverse ripple cassetta frame
Artist not stated in the record · mid-17th century
Frame
Artist not stated in the record · 19th century
Reverse Cassetta frame (pair with 1975.1.2110)
Artist not stated in the record · mid-17th century
Handscreen
Artist not stated in the record · ca. 1750
Portrait of a Young Man
Hans Memling · ca. 1472–75
Tile
J. & J. G. Low Art Tile Works, 1877 – 1883 · late 19th century
Saints Peter, Martha, Mary Magdalen, and Leonard
Correggio (Antonio Allegri) · ca. 1515
Female Mask with Tendrils
F.S. Gilbert · ca. 1905
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. 739 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. 50755 matched · 40 examined · 9 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 11:46 UTC, replayed here rather than repeated. 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.