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. 17 shown for “Franz Kobell” — 46 records examined, 16 dropped by the rights gate.
Archives queried 2026-08-28 14:33 UTC · fetched live for this request
isPublicDomain field is true for this object.metadata_usage.access reads CC0 — a waiver, not an expired term.
Mountainous Landscape with a Brook
Franz Kobell · early 19th century
Euphorbia seguieriana Neck.
Artist not stated in the record · -- --- 188-
Rocky Landscape with a Lake
Franz Kobell · 1749–1822
Polygala major Jacq.
Artist not stated in the record · 27 May 1884
View of Munich with Marienkirche on right
Franz Kobell · late 18th–early 19th century
Synthyris reniformis Benth.
Artist not stated in the record · 15 Apr 1906
Classical Landscape with Figures
Franz Kobell · 1749–1822
Iberis amara L.
Artist not stated in the record · 17 May 1971
Postilion on Horse in a Winter Landscape
Wilhelm von Kobell · ca. 1798
Rumex bucephalophorus L.
Artist not stated in the record · 22 May 1971
Franz Sigel
Ehrgott & Forbriger Lithography Company, active 1856 - 1869 · c. 1862
Franz Sigel
Unidentified Artist · c. 1861-62
Franz Sigel
Henry Bruckner, 1800 - 1900? · c. 1862
Franz Sigel
Louis Prang Lithography Company, active 1856 - 1899 · c. 1862
Franz Sigel
Christian Inger, c. 1858 - ? · 1861-64
Franz Sigel
Currier & Ives Lithography Company, active 1857 - 1907 · 1862
Franz Sigel
Feodor Fuchs, active 1856 - 1876 · c. 1862
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. 6 matched · 6 examined · 1 dropped by the rights gate. Kept only where isPublicDomain === true and a file URL was published.5 shown - Smithsonian Open Access API (api.si.edu)Rights field:
content.descriptiveNonRepeating.metadata_usage.access. 3607 matched · 40 examined · 15 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 2026-08-28 14:33 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.