Acquisition position
Gunnel Plankenhorn · Prints and works on paper · Auktionsfirma Kenneth Svensson i Kalmar
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Bildmått 75x57 cm, rammått 90x71 cm. Glasad träram. Has resale rights.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 39% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 38% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
25% combined confidenceVisual 0% · Name 35% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 35% · 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 confidenceVisual 0% · Name 33% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 32% · Marks 25% · Material 40%
24% combined confidenceVisual 0% · Name 32% · 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
Fritz Pauli Swiss, 1891-1968
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoWalter Shirlaw (American, 1838–1909)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGérard Edelinck (French, born Flanders, 1640-1707) after Hyacinthe Rigaud (French, 1659-1743)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJean-Baptiste-Camille Corot (French, 1796-1875) printed by Auguste Delâtre (French, 1822-1907) published by Cadart et Chavalier, Editeurs (French, 1801-1900)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLawrence Carmichael Earle American, 1845-1921
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGeorges Seurat (French, 1859–1891)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAdolphe Appian French, 1818-1898
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoDavid Dalhoff Neal (American, 1838–1915)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEdward Hopper (American, 1882–1967)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEdward Kemeys (American, 1843–1907) American Bronze Founding Company (American, founded 1886) Chicago
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoGrant Wood (American, 1891–1942)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoSalvator Rosa Italian, 1615-1673
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 13352 | 55% | 300.0 SEK | identity 61%, material 45%, size 62%, title 71%, edition 45% |
| 14146 | 52% | 350.0 SEK | identity 56%, material 45%, size 62%, title 61%, edition 45% |
| 8167 | 50% | 300.0 SEK | identity 58%, material 45%, size 62%, title 45%, 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% |
| 10882 | 50% | 300.0 SEK | identity 50%, material 45%, size 62%, title 58%, edition 45% |
| 10827 | 49% | 300.0 SEK | identity 50%, material 45%, size 62%, title 57%, edition 45% |
| 712 | 49% | 556.0 SEK | identity 56%, material 45%, size 62%, title 40%, 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.