Acquisition position
Current all in cost
500.0 SEK
Current bid or estimate400.0 SEK
Modelled discount51.0%
Liquidity score78%
Knut Grane · Prints and works on paper · Garpenhus Auktioner
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
ca 30x30 cm, rammått 52x52 cm Has resale rights.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 40% · 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 37% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 37% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
24% 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 confidenceVisual 0% · Name 33% · 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
Leonard Wells Volk (American, 1828–1895)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRichard Buckminster Fuller (American, 1895-1983) printed by John Lund, Keith Brintzenhofe, Bill Goldston, and Zigmunds Priede; typography by Juda Rosenberg published by Universal Limited Art Editions (American, founded 1955)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBauhaus Ceramics Workshop German, 1919-1933
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoUnknown artist printed by Sackett & Wilhelms Corp., New York
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHa Chong-Hyun Korean, born 1935
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHa Chong-Hyun Korean, born 1935
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEl Greco (Doménikos Theotokópoulos; Greek, active in Spain, 1541–1614)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoFrancisco José de Goya y Lucientes Spanish, 1746-1828
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBill Viola American, 1951-2024
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoMary Cassatt (American, 1844–1926)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoSteven Sorman American, born 1948
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoPierre-Auguste Renoir (French, 1841–1919)
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 2447 | 59% | 300.0 SEK | identity 76%, material 45%, size 62%, title 64%, edition 45% |
| 2992 | 51% | 400.0 SEK | identity 45%, material 45%, size 62%, title 82%, edition 45% |
| 6187 | 51% | 8586.0 SEK | identity 58%, material 45%, size 62%, title 46%, edition 45% |
| 1607 | 50% | 350.0 SEK | identity 55%, material 45%, size 62%, title 50%, edition 45% |
| 6892 | 50% | 550.0 SEK | identity 45%, material 45%, size 62%, title 72%, edition 45% |
| 11683 | 49% | 300.0 SEK | identity 45%, material 45%, size 62%, title 71%, edition 45% |
| 4631 | 50% | 800.0 SEK | identity 48%, material 45%, size 62%, title 64%, edition 45% |
| 158 | 49% | 500.0 SEK | identity 52%, material 45%, size 62%, title 51%, edition 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.