Acquisition position
Current all in cost
1876.0 SEK
Current bid or estimate1876.0 SEK
Modelled discount51.1%
Liquidity score84%
Jacob Ängman · Silver and metalware · Uppsala Auktionskammare
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
L ca 12 cm. Vikt ca 155 g.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 45% · Marks 25% · Material 40%
26% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 37% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 35% · Marks 25% · Material 40%
24% combined confidenceClosed deal feedback
Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.
Learning guardrail
Global research evidence
Lithographs by Pierre Émile Cornillier (French, 19th century); Lucien Perroudon (French, 19th century); Louis Anquetin (French, 1861–1932); Adolphe Ernest Gumery (French, 1861–1943) Herman René Georges Paul (French, 19th century); Maximilien Luce (French, 1858–1941); George Manzana-Pissarro (French, 1871–1961); Hippolyte Petitjean (French, 1854–1929); Louis Armand Rault (French, 19th century); Théo van Rysselberghe (Belgian, 1862–1926); Joaquim Sunyer y Miró (Spanish, 1875–1956); and Félix Edouard Vallotton (French, born Switzerland, 1865–1925) published by Paul Brenet (French, 19th–20th centuries) and Félix Thureau (French, 19th–20th centuries) preface written by Octave Mirbeau (French, 1848–1917)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAnsel Adams American, 1902–1984
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoUrsula Graeff-Hirsch German, born 1929
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoOnchi Koshiro Japanese, 1891-1955
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoOtakar Mrkvicka (Czech, 1898–1957) Various Artists (Czech, c. 1930)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoUnknown Artist (Augsburg, 15th century) printed and published by Johann Schönsperger the Elder (German, c. 1455–1521) original text by Jacobus de Voragine (Italian, c. 1230–1298) portfolio text by Wilhelm Ludwig Schreiber (German, 1855–1932)
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 2309 | 66% | 4100.0 SEK | identity 100%, material 45%, size 62%, title 68%, hallmarks 45%, weight 62% |
| 9989 | 66% | 10777.0 SEK | identity 100%, material 45%, size 62%, title 65%, hallmarks 45%, weight 62% |
| 9832 | 66% | 16600.0 SEK | identity 100%, material 45%, size 62%, title 64%, hallmarks 45%, weight 62% |
| 902 | 66% | 28000.0 SEK | identity 100%, material 45%, size 62%, title 62%, hallmarks 45%, weight 62% |
| 9907 | 65% | 13579.0 SEK | identity 100%, material 45%, size 62%, title 61%, hallmarks 45%, weight 62% |
| 9600 | 65% | 60000.0 SEK | identity 100%, material 45%, size 62%, title 59%, hallmarks 45%, weight 62% |
| 2836 | 63% | 14000.0 SEK | identity 92%, material 45%, size 62%, title 62%, hallmarks 45%, weight 62% |
| 11975 | 53% | 5500.0 SEK | identity 61%, material 45%, size 62%, title 41%, hallmarks 45%, weight 62% |
Automatic signature module
The local engine detects and isolates candidate regions, searches the trusted mark library and runs conservative signature forensics. Optional AI interprets unreadable regions and creates research queries without changing the forensic verdict.
The module runs during normal analysis when a local image is available.
Marks laboratory
110 independent methods generate cleanup variants, stroke and symbol descriptors, library matches, trust controls and conflict warnings.
Signature forensics
This does not declare a signature genuine. It measures fit against a multi-source reference set, confusing signers and natural variation.
Run mark matching first, then compare the questioned signature against a sufficiently broad trusted reference set.