Acquisition position
Theodor Jönsson · Paintings · Crafoord Auktioner Lund
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Dagermått: 26,5 x 22,5 cm Rammått: 35 x 29,5 cm.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 51% · Marks 25% · Material 40%
27% combined confidenceVisual 0% · Name 47% · Marks 25% · Material 40%
26% combined confidenceVisual 0% · Name 43% · Marks 25% · Material 40%
26% combined confidenceVisual 0% · Name 42% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 39% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 39% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 38% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 38% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 32% · 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
Théodore Rousseau (French, 1812–1867)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoThéodore Rousseau (French, 1812–1867)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoTheodore Robinson (American, 1852–1896)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoThéodore Rousseau (French, 1812-1867) printed by Auguste Delâtre (French, 1822-1907)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoPaul Theodore Frankl (American, born Austria, 1886–1958) New York
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoCharles Emile Callande de Champmartin (French, 1797–1883)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoThéodore Rousseau (French, 1812–1867)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoTheodore Stamos American, 1922–1997
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoThéodore Rousseau (French, 1812–1867)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoThéodore Chassériau French, 1819-1856
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJean Louis André Théodore Géricault (French, 1791–1824)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAnders Zorn Swedish, 1860-1920
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 19872 | 60% | 200.0 SEK | identity 67%, material 45%, size 62%, title 59% |
| 19514 | 59% | 1600.0 SEK | identity 67%, material 45%, size 62%, title 56% |
| 18215 | 59% | 1211.0 SEK | identity 65%, material 45%, size 62%, title 56% |
| 20460 | 56% | 1600.0 SEK | identity 67%, material 45%, size 62%, title 32% |
| 20897 | 56% | 1550.0 SEK | identity 67%, material 45%, size 62%, title 32% |
| 20562 | 56% | 800.0 SEK | identity 67%, material 45%, size 62%, title 32% |
| 19787 | 56% | 1330.0 SEK | identity 55%, material 45%, size 62%, title 64% |
| 21089 | 55% | 1100.0 SEK | identity 56%, material 45%, size 62%, title 56% |
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.