Acquisition position
Current all in cost
450.0 SEK
Current bid or estimate300.0 SEK
Modelled discount36.6%
Liquidity score76%
Erik Höglund · Art glass · Hälsinglands Auktionsverk
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
E.H. S4C, 54/100. Höjd 19,5 cm.
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 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 44% · Marks 25% · Material 40%
26% combined confidenceVisual 0% · Name 41% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 39% · Marks 25% · Material 40%
25% combined confidenceClosed deal feedback
Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.
Learning guardrail
Global research evidence
Jeff Koons American, born 1955
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoKathleen Blackshear (American, 1897–1988)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRomare Howard Bearden American, 1911-1988
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJeff Koons American, born 1955
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoKiki Smith American, born Germany, 1954
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoIsamu Noguchi American, 1904-1988
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoStanley William Hayter American, born England, 1901-1988
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHerman Menzel American, 1904–1988
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoStanley William Hayter American, born England, 1901-1988
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRobert William Addison (American, 1924–1988)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLouise Nevelson American, born Russia, 1899-1988
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBarbara Kruger American, born 1945
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 5694 | 68% | 350.0 SEK | identity 100%, material 45%, size 62%, title 92%, factory marks 45% |
| 13061 | 67% | 350.0 SEK | identity 100%, material 45%, size 62%, title 75%, factory marks 45% |
| 1434 | 67% | 200.0 SEK | identity 100%, material 45%, size 62%, title 75%, factory marks 45% |
| 2399 | 67% | 1265.0 SEK | identity 100%, material 45%, size 62%, title 74%, factory marks 45% |
| 7627 | 67% | 405.0 SEK | identity 100%, material 45%, size 62%, title 67%, factory marks 45% |
| 15454 | 66% | 350.0 SEK | identity 100%, material 45%, size 62%, title 62%, factory marks 45% |
| 9941 | 66% | 300.0 SEK | identity 100%, material 45%, size 62%, title 62%, factory marks 45% |
| 14633 | 66% | 3600.0 SEK | identity 100%, material 45%, size 62%, title 60%, factory 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.