Acquisition position
Current all in cost
1900.0 SEK
Current bid or estimate1900.0 SEK
Modelled discount57.8%
Liquidity score84%
Josef Frank · Silver and metalware · Helsingborgs Auktionskammare
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Diameter 18 cm.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 45% · Marks 25% · Material 40%
26% combined confidenceVisual 0% · Name 43% · Marks 25% · Material 40%
26% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 40% · 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 38% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 37% · 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 confidenceVisual 0% · Name 35% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 34% · 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
Designed by Norman Bel Geddes (American, 1893–1958) Manufactured by Revere Copper and Brass Company (American, founded 1801) Rome, New York
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoMel Bochner American, 1940-2025
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRussel Wright American, 1904–1976
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAndrew J. Russell (American, 1830–1902) and Rick Dingus (American, born 1951)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoChristian Eckart Canadian, born 1959
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoClaire Zeisler (American, 1903-1991) Chicago, Illinois, United States
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoUrsula Schulz-Dornburg German, born 1938
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoFred Wilson American, born 1954
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAmir Berbić Bosnian, born 1980
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAgnes Martin American, born Canada, 1912-2004
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoIvan Albright (American, 1897–1983)
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 openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 9450 | 66% | 3208.0 SEK | identity 100%, material 45%, size 62%, title 79%, hallmarks 45%, weight 62% |
| 3683 | 66% | 500.0 SEK | identity 100%, material 45%, size 62%, title 75%, hallmarks 45%, weight 62% |
| 11497 | 66% | 3100.0 SEK | identity 100%, material 45%, size 62%, title 69%, hallmarks 45%, weight 62% |
| 1320 | 66% | 9500.0 SEK | identity 100%, material 45%, size 62%, title 70%, hallmarks 45%, weight 62% |
| 4835 | 66% | 4200.0 SEK | identity 100%, material 45%, size 62%, title 70%, hallmarks 45%, weight 62% |
| 3723 | 66% | 3600.0 SEK | identity 100%, material 45%, size 62%, title 66%, hallmarks 45%, weight 62% |
| 27 | 66% | 2810.0 SEK | identity 100%, material 45%, size 62%, title 64%, hallmarks 45%, weight 62% |
| 2742 | 66% | 8006.0 SEK | identity 100%, material 45%, size 62%, title 65%, 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.