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. 12 shown for “5c prepaid United States Express Company single” — 40 records examined, 0 dropped by the rights gate.
Archives queried 2026-08-31 23:20 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.The Metropolitan Museum of Art: HTTP 403 from collectionapi.metmuseum.org. Results from the remaining archive are shown unchanged — nothing is substituted for a source that did not answer.
5c prepaid United States Express Company single
Artist not stated in the record · c. 1854
5c Documentary Express revenue stamp single on Adams Express Company’s receipt
Artist not stated in the record · February 6, 1863
5c gray brown Garfield plate proof single
American Bank Note Company · 1882
5c indigo Garfield plate proof single
American Bank Note Company · 1888
5c brown Jefferson Type I single
Toppan, Carpenter and Company · 1859
5c Columbus Soliciting Aid from Isabella plate proof single
American Bank Note Company · 1893
5c brown Jefferson F. Grill single
National Bank Note Company · 1867
5c gray brown Garfield Sample overprint single
American Bank Note Company · 1882
5c red brown Jefferson single
Toppan, Carpenter, Casilear and Company · 1856
5c indigo Garfield single
American Bank Note Company · 1888
5c gray brown Garfield single
American Bank Note Company · 1882
5c Taylor plate proof single
Continental Bank Note Company · 1875
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. HTTP 403 from collectionapi.metmuseum.org. No records from this archive are shown for this query.Unavailable - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 5487298 matched · 40 examined · 0 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 23:20 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.