Acquisition position
Thorvald Marthinsen · Silver and metalware · Ekenbergs Auktioner
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Vikt inkl. fylld fot ca 279 gram. Höjd ca 11 cm. Modell 431 C.
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 40% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 40% · 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 37% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 35% · 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
Arthur Dove (American, 1880–1946)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBarbour Silver Co., Division of International Silver Company (American, 1892–1931) Chasing by Christopher M. Whalen (American, 1867–1932) Meriden, Connecticut
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoFelix Gonzalez-Torres American, born Cuba, 1957–1996
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGeorge Inness (American, 1825–1894)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Dove (American, 1880–1946)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoDesigned by Arthur Silver (English, 1853-1896) Produced by Silver Studio Sold by Liberty & Co. Ltd. France, Alsace
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoDesigned by Silver Studio, 1880–1963 Produced by Liberty and Co., founded 1875 England, London
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJames McNeill Whistler (American, 1834–1903)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJames McNeill Whistler (American, 1834–1903)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoVictor Dubreuil American, born France, 1842–after 1910
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJames McNeill Whistler (American, 1834–1903)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoDesigned by Arthur Silver (English, 1853–1896) France, Mulhouse
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 8048 | 66% | 4413.0 SEK | identity 100%, material 45%, size 62%, title 77%, hallmarks 45%, weight 62% |
| 12552 | 53% | 200.0 SEK | identity 59%, material 45%, size 62%, title 47%, hallmarks 45%, weight 62% |
| 14502 | 51% | 2000.0 SEK | identity 55%, material 45%, size 62%, title 44%, hallmarks 45%, weight 62% |
| 877 | 51% | 1909.0 SEK | identity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62% |
| 3516 | 51% | 400.0 SEK | identity 53%, material 45%, size 62%, title 48%, hallmarks 45%, weight 62% |
| 15213 | 51% | 2374.0 SEK | identity 53%, material 45%, size 62%, title 46%, hallmarks 45%, weight 62% |
| 14243 | 51% | 2018.0 SEK | identity 53%, material 45%, size 62%, title 45%, hallmarks 45%, weight 62% |
| 14316 | 51% | 1919.0 SEK | identity 53%, material 45%, size 62%, title 45%, 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.