Acquisition position
Current all in cost
500.0 SEK
Current bid or estimate300.0 SEK
Modelled discount57.7%
Liquidity score78%
Kerstin Rääf · 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
23x32 cm, rammått 38x45 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 42% · Marks 25% · Material 40%
26% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 40%
25% 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 38% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 34% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 34% · 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
Sherwin DeGraff conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEd Paschke (American, 1939-2004) conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRodney Baker (American, born 1951) conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoPhilip Evergood American, 1901–1973
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoChristina Ramberg (American, 1946-1995) conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRick Ulman conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoSonia Sheridan (American, born 1925) conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoBarbara Rossi (American, 1940-2023) conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoTheodore Halkin (American, 1924-2020) conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLester Lashley conceived, organized, and produced by Sonia Sheridan produced by The School of the Art Institute of Chicago and the Advance Screen Company, Chicago distributed by The Goodlion
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoValeria “Mikki” Ferrill American, born 1937
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEva Hesse American, born Germany, 1936–1970
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 15167 | 60% | 350.0 SEK | identity 74%, material 45%, size 62%, title 79%, edition 45% |
| 4 | 51% | 500.0 SEK | identity 52%, material 45%, size 62%, title 68%, edition 45% |
| 9368 | 51% | 300.0 SEK | identity 52%, material 45%, size 62%, title 69%, edition 45% |
| 6264 | 50% | 2600.0 SEK | identity 45%, material 45%, size 62%, title 74%, edition 45% |
| 6572 | 50% | 300.0 SEK | identity 45%, material 45%, size 62%, title 72%, edition 45% |
| 5860 | 49% | 1130.0 SEK | identity 54%, material 45%, size 62%, title 47%, edition 45% |
| 13204 | 49% | 950.0 SEK | identity 45%, material 45%, size 62%, title 66%, edition 45% |
| 6906 | 49% | 13250.0 SEK | identity 45%, material 45%, size 62%, title 67%, 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.