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. 15 shown for “Opera glasses” — 64 records examined, 46 dropped by the rights gate.
Archives queried 2026-09-03 05:47 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Opera glasses
Artist not stated in the record · ca. 1840
Opera glasses and case owned by Mary Church Terrell
Lemaire, French, 1846 - 1955 · late 19th-mid 20th century
Heart of the Andes
Frederic Edwin Church · 1859
Opera glasses and case owned by Mary Church Terrell
Lemaire, French, 1846 - 1955 · late 19th-mid 20th century
Man with a Magnifying Glass
Rembrandt (Rembrandt van Rijn) · early 1660s
At the Theatre
Constantin Guys, French, 1802 – 1892 · ca. 1873
Telescoping opera glass
Artist not stated in the record · ca. 1830
The Ballet from "Robert le Diable"
Edgar Degas · 1871
![[The Opera Ball], by Pierre-Louis Pierson](/_next/image?url=https%3A%2F%2Fimages.metmuseum.org%2FCRDImages%2Fph%2Fweb-large%2FDP158932.jpg&w=3840&q=75)
[The Opera Ball]
Pierre-Louis Pierson · 1861–67, printed 1895–1910
Two Opera Singers
Meissen Manufactory · 1749–50
Le Nouvel Opéra de Paris (Sculpture Ornementale)
Louis-Emile Durandelle · 1865–72
Faustina Bordoni and Fox
Meissen Manufactory · ca. 1743
Reading glass with two lenses (loupe)
Artist not stated in the record · ca. 1780
Opera glasses, from the Novelties series (N228, Type 4) issued by Kinney Bros.
Kinney Brothers Tobacco Company · 1889
Opera glasses, from the Novelties series (N228, Type 3) issued by Kinney Bros.
Kinney Brothers Tobacco Company · 1889
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. 230 matched · 24 examined · 9 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. 76681 matched · 40 examined · 37 dropped by the rights gate. Kept only where metadata_usage.access === "CC0" and an image resource was published.3 shown
These figures describe the pass run at 2026-09-03 05:47 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.