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. 14 shown for “Telescoping opera glass” — 64 records examined, 48 dropped by the rights gate.
Archives queried 2026-09-03 07:46 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Drop-front desk (secrétaire à abattant or secrétaire en cabinet)
Martin Carlin · ca. 1776
Opera glasses and case owned by Mary Church Terrell
Lemaire, French, 1846 - 1955 · late 19th-mid 20th century
Telescoping opera glass
Artist not stated in the record · ca. 1830
Opera glasses and case owned by Mary Church Terrell
Lemaire, French, 1846 - 1955 · late 19th-mid 20th century
Microscope
Claude-Siméon Passemant · ca. 1750
Mantel clock (pendule de chiminée)
Paul Gudin Le Jeune · clock ca. 1750, figures decorated ca. 1737/38
Chinese musicians
Chelsea Porcelain Manufactory · ca. 1755
Man with a Magnifying Glass
Rembrandt (Rembrandt van Rijn) · early 1660s
Showcase on stand (Scarabattola)
Artist not stated in the record · late 17th century
Two dancers
Ludwigsburg Porcelain Manufactory · ca. 1760–63
Opera glasses
Artist not stated in the record · ca. 1840
Two Opera Singers
Meissen Manufactory · 1749–50
Wineglass
Artist not stated in the record · ca. 1730
Faustina Bordoni and Fox
Meissen Manufactory · ca. 1743
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. 251 matched · 24 examined · 10 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. 77720 matched · 40 examined · 38 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.2 shown
These figures describe the pass run at 2026-09-03 07:46 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.