Acquisition position
Current all in cost
525.0 SEK
Current bid or estimate462.0 SEK
Modelled discount21.8%
Liquidity score70%
Jan Ketels · Photography · Björnssons Auktionskammare
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Signerad "KETELS. JAN". Bildmått: 26x20cm. Rammått: 42x35,5cm.
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 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 37% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 33% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 33% · 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
Paul Gauguin French, 1848-1903
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGeorg Redlich (American, 20th century) published by the Works Progress Administration
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoPaul Gauguin French, 1848-1903
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoClaude Monet (French, 1840–1926)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoKurt Seligmann American, born Switzerland, 1900-1962
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoFrederic Edwin Church (American, 1826–1900)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHale Woodruff (American, 1900–1980)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoClaude Monet (French, 1840–1926)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoYves Tanguy American, born France, 1900–1955
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoPierre Bonnard (French, 1867-1947) poetry by Paul Verlaine (French, 1844-1896) printed by Imprimerie Nationale (French, 20th century) published by Ambroise Vollard (French, 1867-1939)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJasper Francis Cropsey (American, 1823–1900)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoKurt Seligmann American, born Switzerland, 1900-1962
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 10803 | 47% | 700.0 SEK | identity 45%, material 45%, size 62%, title 49%, edition 45% |
| 7252 | 47% | 850.0 SEK | identity 45%, material 45%, size 62%, title 49%, edition 45% |
| 11021 | 47% | 300.0 SEK | identity 45%, material 45%, size 62%, title 47%, edition 45% |
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.