Acquisition position
Current all in cost
750.0 SEK
Current bid or estimate500.0 SEK
Modelled discount68.7%
Liquidity score82%
Harry Harryan · Paintings · Crafoord Auktioner Stockholm
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Bild: 38,5 x 32,5 cm. Ram: 54,5 x 45,5 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 36% · 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
Harry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoMax Slevogt (German, 1868-1932) James Fenimore Cooper (American, 1789-1851)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Weese American, 1915–1998
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Tyler (American, 1801-1858) United States, New York, Jefferson County
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarry Callahan American, 1912–1999
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 16077 | 56% | 800.0 SEK | identity 64%, material 45%, size 62%, title 38% |
| 15262 | 53% | 858.0 SEK | identity 54%, material 45%, size 62%, title 50% |
| 15076 | 53% | 2318.0 SEK | identity 55%, material 45%, size 62%, title 45% |
| 16053 | 52% | 406.0 SEK | identity 50%, material 45%, size 62%, title 53% |
| 14665 | 51% | 900.0 SEK | identity 48%, material 45%, size 62%, title 54% |
| 16408 | 51% | 800.0 SEK | identity 50%, material 45%, size 62%, title 47% |
| 16046 | 51% | 300.0 SEK | identity 45%, material 45%, size 62%, title 60% |
| 16695 | 50% | 5050.0 SEK | identity 47%, material 45%, size 62%, title 52% |
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.