Acquisition position
Current all in cost
500.0 SEK
Current bid or estimate400.0 SEK
Modelled discount39.0%
Liquidity score76%
Jan Håfström · Art glass · Skånes Auktionsverk
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Dagmått 110x178, yttermått 128x196 cm. Träram med glas. Avbildad i boken "Måla sitt liv - En essä on Jan Håfströms konst" av Doglas Feuk på sidan 14. Boken medföljer. Has resale rights.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 86% · Marks 25% · Material 0%
27% combined confidenceVisual 0% · Name 39% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 30% · Marks 25% · Material 40%
23% combined confidenceVisual 0% · Name 57% · Marks 25% · Material 0%
22% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 0%
20% combined confidenceVisual 0% · Name 37% · Marks 25% · Material 0%
19% combined confidenceVisual 0% · Name 35% · Marks 25% · Material 0%
19% combined confidenceVisual 0% · Name 28% · Marks 25% · Material 0%
18% combined confidenceVisual 0% · Name 28% · Marks 25% · Material 0%
18% combined confidenceClosed deal feedback
Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.
Learning guardrail
Global research evidence
Jan Matulka American, 1890–1972
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoCharles Harbutt American, 1935-2015
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAndy Warhol American, 1928-1987
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAdmire Kamudzengerere (Zimbabwean, born 1981) and Rachel Monosov (Russian, born 1987)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAlma Thomas American, 1891–1978
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJoseph Cornell American, 1903–1972
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEleanor Antin American, born 1935
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJacques-Henri Lartigue (French, 1894–1986) printed under the artist's supervision by Jean Yves du Barré (French, 20th century)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoTerry Evans American, born 1944
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJoseph Cornell American, 1903–1972
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJoseph Cornell American, 1903–1972
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJoseph Cornell American, 1903–1972
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 12584 | 53% | 3500.0 SEK | identity 62%, material 45%, size 62%, title 54%, factory marks 45% |
| 19901 | 53% | 1007.0 SEK | identity 62%, material 45%, size 62%, title 45%, factory marks 45% |
| 771 | 53% | 300.0 SEK | identity 62%, material 45%, size 62%, title 47%, factory marks 45% |
| 1355 | 53% | 300.0 SEK | identity 62%, material 45%, size 62%, title 46%, factory marks 45% |
| 17869 | 52% | 500.0 SEK | identity 62%, material 45%, size 62%, title 42%, factory marks 45% |
| 17936 | 52% | 400.0 SEK | identity 62%, material 45%, size 62%, title 42%, factory marks 45% |
| 12108 | 52% | 7500.0 SEK | identity 62%, material 45%, size 62%, title 43%, factory marks 45% |
| 5275 | 52% | 3560.0 SEK | identity 62%, material 45%, size 62%, title 36%, factory 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.