Acquisition position
Current all in cost
450.0 SEK
Current bid or estimate300.0 SEK
Modelled discount43.8%
Liquidity score68%
Ann-Katrin & Helmut Witt · Sculpture · Halmstads Auktionskammare
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Höjd 12 cm. Signerad Witt.
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 38% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 38% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 34% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 27% · Marks 25% · Material 40%
23% combined confidenceClosed deal feedback
Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.
Learning guardrail
Global research evidence
Emanuel de Witte (Dutch, c. 1617–1691/92)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBill Witt American, 1921-2013
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBill Witt American, 1921-2013
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoPieter de Witte Flemish, 1548-1628
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoDesigned by Narcissa Niblack Thorne American, 1882-1966
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoDesigned by Narcissa Niblack Thorne American, 1882-1966
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBill Witt American, 1921-2013
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBill Witt American, 1921-2013
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHelmut Jahn (American, born Germany, 1940-2021)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEngland
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRobert Nanteuil (French, 1623-1678) after Pierre Mignard I (French, 1612-1695)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHelmut Jahn (American, born Germany, 1940-2021) Murphy/Jahn Architects (American, founded 1981)
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 15375 | 71% | 300.0 SEK | identity 100%, material 45%, size 62%, title 96%, foundry or marks 45% |
| 8249 | 51% | 300.0 SEK | identity 53%, material 45%, size 62%, title 56%, foundry or marks 45% |
| 3191 | 49% | 300.0 SEK | identity 47%, material 45%, size 62%, title 64%, foundry or marks 45% |
| 7903 | 49% | 850.0 SEK | identity 45%, material 45%, size 62%, title 66%, foundry or marks 45% |
| 4164 | 49% | 300.0 SEK | identity 45%, material 45%, size 62%, title 64%, foundry or marks 45% |
| 7025 | 49% | 750.0 SEK | identity 45%, material 45%, size 62%, title 64%, foundry or marks 45% |
| 16734 | 48% | 300.0 SEK | identity 45%, material 45%, size 62%, title 59%, foundry or marks 45% |
| 19834 | 48% | 4800.0 SEK | identity 47%, material 45%, size 62%, title 52%, foundry or marks 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.