Acquisition position
Current all in cost
375.0 SEK
Current bid or estimate200.0 SEK
Modelled discount71.5%
Liquidity score82%
Gustaf Börtner · Paintings · Karlstad Hammarö Auktionsverk
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Bildmått 37x45 cm. Rammått 58x66 cm. Has resale rights.
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 39% · 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 35% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 34% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 32% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 31% · 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
Gustaf Oscar Dalström American, 1893-1934
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGino Severini (Italian, 1883-1966) published by Guilde de la Gravure, Pully-Lausanne, Switzerland
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLee Friedlander American, born 1934
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJonathan De Pas (Italian,1932–1991) Donato D’Urbino (Italian, born 1935) Paolo Lomazzi (Italian, born 1936) Carla Scolari (Italian, born 1930's) Manufactured by Zanotta (Italian, founded 1954)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGustaf Oscar Dalström American, 1893-1934
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGustaf Oscar Dalström American, 1893-1971
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBernd Becher (German, 1931–2007) and Hilla Becher (German, 1934-2015)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoT'ai Hun Laos, Phong Saly Province, Muang Hun
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLouis Faurer American, 1916–2001
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGustaf Fjaestad Swedish, 1868-1948
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoPossibly T'ai Puan Eastern Laos, Sam Tai, Xieng Khouang province
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLarry Fink American, 1941-2023
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 23330 | 63% | 8180.0 SEK | identity 72%, material 45%, size 62%, title 68% |
| 21834 | 63% | 1000.0 SEK | identity 72%, material 45%, size 62%, title 64% |
| 21437 | 62% | 1500.0 SEK | identity 72%, material 45%, size 62%, title 60% |
| 21330 | 60% | 300.0 SEK | identity 69%, material 45%, size 62%, title 51% |
| 19581 | 59% | 11000.0 SEK | identity 64%, material 45%, size 62%, title 58% |
| 21300 | 58% | 350.0 SEK | identity 67%, material 45%, size 62%, title 45% |
| 23144 | 58% | 300.0 SEK | identity 64%, material 45%, size 62%, title 51% |
| 22263 | 57% | 400.0 SEK | identity 56%, material 45%, size 62%, title 72% |
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.