Two 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 “Porringer with Cover” — 64 records examined, 27 dropped by the rights gate.
Archives queried 2026-09-06 01:45 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Porringer with Cover
Artist not stated in the record · ca. 1700

Covered Porringer
Claude Laubreaux · ca. 1750

Porringer
Samuel Vernon · 1700–1730

Double-Handled Porringer (Écuelle)
Johann Erhard Heuglin II, German, 1687 – 1757 · ca. 1725

Porringer
Peter Van Dyck · 1700–1725

Ornament Designs for use on Porringer’s (Shallow Bowls), Lids, and Handles
Masson, French, active late 17th and early 18th century · late 17th–early 18th century

Porringer
William Cowell Sr. · 1715–30

Ornament Designs for use on Porringer’s (Shallow Bowls), Lids, and Handles
Masson, French, active late 17th and early 18th century · late 17th–early 18th century

Porringer
Thomas Cory · 1685–86

Porringer
Jacob Hurd, American, ca. 1702 - 1758 · ca. 1740

Porringer with cover (Écuelle)
Chantilly · 1732–38

Porringer
Artist not stated in the record · before 1825

Porringer with cover (Écuelle)
Philippe Lafourge · 1759

Porringer
Artist not stated in the record · 1770 - 1820

Porringer with cover (Écuelle)
Cozzi Manufactory · 1770–80

Porringer
Artist not stated in the record · 1810 - ca 1840

Porringer with cover and stand
Meissen Manufactory · 1735–40

Porringer
Artist not stated in the record · late 18th or early 19th century

Porringer with cover or posset cup
Artist not stated in the record · 18th century

Porringer
Artist not stated in the record · before 1825

Porringer
Samuel Melville · 1793–1800

Porringer
Artist not stated in the record · 1770 - ca 1830

Tapestry Room from Croome Court
Robert Adam · 1763–71

Porringer
Artist not stated in the record · late 18th or early 19th century
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. 12586 matched · 24 examined · 1 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. 263132 matched · 40 examined · 26 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 2026-09-06 01:45 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.