Acquisition position
Current all in cost
500.0 SEK
Current bid or estimate450.0 SEK
Modelled discount73.7%
Liquidity score78%
Arthur Luiz Piza · Prints and works on paper · Björnssons Auktionskammare
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Signerad Piza. Numrerad 62/99. Bildmått: 33x25 cm. Rammått: 67x52 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 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 86% · Marks 25% · Material 40%
33% combined confidenceVisual 0% · Name 35% · 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
Arthur Luiz Piza Brazilian, 1928–2017
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Luiz Piza Brazilian, 1928–2017
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Thrall American, 1926-2015
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Dove (American, 1880–1946)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Dove (American, 1880–1946)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Dove American, 1880-1946
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Dove (American, 1880–1946)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Devis (English, 1712–1787)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Dove (American, 1880–1946)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Dove (American, 1880–1946)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArthur Wesley Dow (American, 1857–1922)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJonathan Bayer American, 1936-2023
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 9247 | 47% | 1900.0 SEK | identity 50%, material 45%, size 62%, title 39%, 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.