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. 22 shown for “Postage Stamp Booklet” — 64 records examined, 25 dropped by the rights gate.
Archives queried 2026-09-01 10:55 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Stamp
Artist not stated in the record · 1800–1883
Postage Stamp Booklet
Artist not stated in the record · date of issue: August 19, 1960
Stamp
Artist not stated in the record · 1800–83
Interior stamp booklet from postage stamp preserver
Artist not stated in the record · c. 1910
Unused block of four "Penny Black" postage stamps of Queen Victoria
William Wyon · issued May 6, 1840
2c Washington booklet pane
Bureau of Engraving and Printing · November 23, 1910
Unused block of four "Two Penny Blue" postage stamps of Queen Victoria
William Wyon · issued May 8, 1840
2c Washington booklet pane
Bureau of Engraving and Printing · November 23, 1910
Unused block of four "Penny Black" postage stamps of Queen Victoria
William Wyon · issued May 6, 1840
1c Washington booklet pane of 6
Bureau of Engraving and Printing · March 1917
Unused block of forty-two "Two Penny Blue" postage stamps of Queen Victoria
William Wyon · issued March 13, 1841
Souvenir booklet on album page
Artist not stated in the record · 1948
Unused block of forty-two "Penny Red-Brown" postage stamps of Queen Victoria
William Wyon · issued February 10, 1841
Souvenir booklet on album page
Artist not stated in the record · 1948
Unused block of twelve "Penny Red Brown" postage stamps of Queen Victoria
William Wyon · issued February 10, 1841
3c Washington booklet cover
Bureau of Engraving and Printing · 1918
Souvenir spoon with green postage stamp and postmark for Wiesbaden
Artist not stated in the record · late 19th century
TASCO T6 Confederate stamp facsimile single
Artist not stated in the record · 1941
Souvenir spoon with view of a street scene and finial in form of a postage stamp
Artist not stated in the record · late 19th century
Souvenir booklet on album page
Artist not stated in the record · 1948
Test stamp booklet with Mr. Zip cover
Artist not stated in the record · 1963-1966
Back cover of combination booklet
Bureau of Engraving and Printing · 1917
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. 843 matched · 24 examined · 14 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.10 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 19460 matched · 40 examined · 11 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 2026-09-01 10:55 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.