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. 11 shown for “Schermack postage vending machine documents” — 40 records examined, 29 dropped by the rights gate.
Archives queried 2026-09-01 01:04 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.
Schermack postage vending machine documents
Artist not stated in the record · 1947
Schermack stamp vending machines
Schermack Products Corporation · 1950-1960
3c Washington Vending Coil Pair
Bureau of Engraving and Printing · 1918
2c Hudson-Fulton Celebration vending coil pair
Bureau of Engraving and Printing · 1909
Two-slot stamp vending machine with side levers
The Northwestern Corporation, American, founded 1909 · c. 1954-1980s
Two-slot postage stamp vending machine
Postage Stamp Machine Company · 1950s - 1970s
Two-slot stamp vending machine with a push lever
Postage Stamp Machine Company · 1970s
Five-slot postage stamp vending machine
Shipman Manufacturing Company · c. 1960-1978
One-slot postage stamp vending machine
U. S. Vending Machine Company · c. 1921
Stamp vending machine
Artist not stated in the record · c. 1963
Commercial Controls Corporation stamp vending machine
Commercial Controls Corporation · c. 1963
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. 30217 matched · 40 examined · 29 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.11 shown
These figures describe the pass run at 2026-09-01 01:04 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.