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 “Hauberk of Mail” — 64 records examined, 3 dropped by the rights gate.
Archives queried 2026-08-28 00:15 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Shirt of Mail and Plate
Artist not stated in the record · 15th–16th century
Mail pouch for Railway Post Office mail exchange
Artist not stated in the record · c. 1930-70
Shirt of Mail
Artist not stated in the record · 15th century
Registered Mail Service sack
Artist not stated in the record · 1900-1950
Hauberk of Mail
Artist not stated in the record · 15th century
Rotary Registered Mail padlock
Mail Equipment Shops (USPS) · After 1884
Armor of Mail and Plate
Artist not stated in the record · late 18th–first half of the 19th century
Airmail pickup canister
Artist not stated in the record · c. 1939-1944
Shirt of Mail and Plate
Artist not stated in the record · late 15th–16th century
Advertisement for Kodak V-Mail
Artist not stated in the record · c. 1942
Shirt of Mail and Plate of Al-Ashraf Sayf ad-Din Qaitbay (ca. 1416/18–1496), 18th Burji Mamluk Sultan of Egypt
Artist not stated in the record · ca. 1468–96
Railway Mail Service crane with pouch
Artist not stated in the record · c. 1890-1977
Shirt of Mail and Plate of Emperor Shah Jahan (reigned 1624–58)
Artist not stated in the record · dated A.H. 1042/1632–33 CE
Overland Mail employee's notebook
Artist not stated in the record · 1859
Shirt of Mail and Plate
Artist not stated in the record · late 15th–16th century
Chart of the Post Office’s first airmail flights
Artist not stated in the record · August 12 – 17, 1918
Mail Shirt
Artist not stated in the record · probably early 16th century
Pigeon post microfilm
Artist not stated in the record · 1870
Mail Shirt
Artist not stated in the record · 17th–19th century
Mail pouch
Artist not stated in the record · 1920-1930s
Mail Shirt
Artist not stated in the record · dated A.H. 1232/1816–17 CE
Advertisement for Dole Hawaiian Pineapple Products
Artist not stated in the record · 1945
Mail Shirt with Inscribed Rings
Artist not stated in the record · 15th–16th century
Pigeon post microfilm
Artist not stated in the record · 1870
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. 560 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. 2858664 matched · 40 examined · 3 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 00:15 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.