Acquisition position
Ulla Och Gustav Kraitz · Sculpture · Stockholms Auktionsverk Helsingborg
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
På sockel av trä. H ca 12 cm.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 36% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 44% · Marks 25% · Material 0%
20% combined confidenceVisual 0% · Name 43% · Marks 25% · Material 0%
20% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 0%
20% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 0%
20% combined confidenceVisual 0% · Name 37% · Marks 25% · Material 0%
19% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 0%
19% combined confidenceVisual 0% · Name 35% · Marks 25% · Material 0%
19% combined confidenceVisual 0% · Name 35% · Marks 25% · Material 0%
19% combined confidenceVisual 0% · Name 34% · Marks 25% · Material 0%
19% combined confidenceVisual 0% · Name 34% · Marks 25% · Material 0%
19% combined confidenceClosed deal feedback
Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.
Learning guardrail
Global research evidence
Gustave Baumann American, 1881-1971
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLeonard Baskin American, 1922-2000
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoDiego Rivera Mexican, 1886-1957
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGustave Baumann American, 1881-1971
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarold Eugene Edgerton American, 1903–1990
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEvert Pieters Dutch, 1856-1932
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoMartin Schongauer German, c. 1430/50-1491
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoStanislas Lépine (French, 1835–1892)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEdward Steichen American, born Luxembourg, 1879–1973
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoKarl Wirsum American, 1939-2021
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoCharles François Daubigny French, 1817-1878
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoWillem Witsen Dutch, 1860-1923
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 10732 | 69% | 48000.0 SEK | identity 100%, material 45%, size 62%, title 73%, foundry or marks 45% |
| 329 | 56% | 3508.0 SEK | identity 67%, material 45%, size 62%, title 52%, foundry or marks 45% |
| 659 | 51% | 300.0 SEK | identity 53%, material 45%, size 62%, title 55%, foundry or marks 45% |
| 5922 | 50% | 1100.0 SEK | identity 45%, material 45%, size 62%, title 78%, foundry or marks 45% |
| 16446 | 49% | 1400.0 SEK | identity 49%, material 45%, size 62%, title 48%, foundry or marks 45% |
| 13677 | 49% | 1000.0 SEK | identity 49%, material 45%, size 62%, title 48%, foundry or marks 45% |
| 4164 | 49% | 300.0 SEK | identity 45%, material 45%, size 62%, title 64%, foundry or marks 45% |
| 7025 | 49% | 750.0 SEK | identity 45%, material 45%, size 62%, title 64%, foundry or 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.