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 “Nymphenburg Porcelain Factory, German, established by 1753” — 64 records examined, 13 dropped by the rights gate.
Archives queried 2026-08-31 20:04 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Corpus from a Crucifix
Nymphenburg Porcelain Manufactory · ca. 1755

Chocolate Pot with Floral Sprays
Nymphenburg Porcelain Factory, German, established by 1753 · mid- 18th century

Harlequina
Nymphenburg Porcelain Manufactory · ca. 1760

Teapot
Nymphenburg Porcelain Factory, German, established by 1753 · 1765–1770

Coffeepot (part of a service)
Meissen Manufactory · 1723–26

Cup and Saucer with Putti Medallion
Gotha Porcelain Factory, German, established ca. 1757 · 1860–1885

Pair of wall lights
Royal Porcelain Manufactory, Berlin · ca. 1765–68

Cup and Saucer
Artist not stated in the record · early 19th century

Harlequin
Höchst Manufactory · ca. 1750–53

Plate Depicting the Sèvres Porcelain Manufactory
Sèvres Porcelain Manufactory, French, established 1756 · ca. 1822

Vase (vase gothique Fragonard) (one of a pair)
Alexandre Evariste Fragonard · manufactured 1832, decorated 1844

Tea Bowl and Saucer
Zurich Pottery and Porcelain Factory, Swiss, established 1763 · ca. 1775

Potpourri vase (pot-pourri gondole)
Sèvres Manufactory · 1757

ELEVATION DE LA FACADE D’AMALIENBOURG DU COTE DE L’ENTRÉE
François de Cuvilliés the Elder, Belgian, 1695 - 1768 · 1771

Bottle cooler from the Louis XV service (seau à bouteille)
Vincennes Manufactory · 1754

PLAN GÉOMETRAL DE LHERMITAGE EXÉCUTÉ DANS LE JARDIN DE NIMPHENBOURG MIS AU JOUR EN MDCCLXXI
Joseph Effner, German, 1687 – 1745 · 1771

Cup (with a view of the Odeonsplatz, Munich) and saucer
Artist not stated in the record · ca. 1845

PLAN GÉOMETRAL D’UNE DÉCORATION DU FEU D’ARTIFICE PROJETE POUR NIMPHEMBOURG
François de Cuvilliés the younger, German, 1731 - 1777 · 1771

Mantel clock (pendule de chiminée)
Paul Gudin Le Jeune · clock ca. 1750, figures decorated ca. 1737/38

ELÉVATION GÉOMETRAL DE L’HERMITAGE EXÉCUTÉ DANS LE JARDIN DE NIMPHENBOURG
Joseph Effner, German, 1687 – 1745 · 1771

Chinese musicians
Chelsea Porcelain Manufactory · ca. 1755

Sugar Bowl, from the Duc d'Orléans Service
Tournai Porcelain Factory, Belgian, established ca. 1750 · 1787–1792

Two dancers
Ludwigsburg Porcelain Manufactory · ca. 1760–63

Custard Cup
Tournai Porcelain Factory, Belgian, established ca. 1750 · mid- 18th–18th 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. 74 matched · 24 examined · 3 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. 549311 matched · 40 examined · 10 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 2026-08-31 20:04 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.