Acquisition position
Current all in cost
1304.0 SEK
Current bid or estimate1200.0 SEK
Modelled discount0.0%
Liquidity score94%
Unknown maker or artist · Clocks and watches · Auktionsmagasinet Vänersborg
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Boettnr 1431. Safirglas. Armlänk, längd ca 17,5 cm.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Visual 0% · Name 41% · Marks 25% · Material 40%
23% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 40%
23% combined confidenceVisual 0% · Name 40% · Marks 25% · Material 40%
23% combined confidenceVisual 0% · Name 39% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 39% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 39% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 38% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 38% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 37% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 36% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 35% · Marks 25% · Material 40%
22% combined confidenceVisual 0% · Name 33% · Marks 25% · Material 40%
21% combined confidenceClosed deal feedback
Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.
Learning guardrail
Global research evidence
William Henry Jackson American, 1843–1942 Mark Klett American, born 1952 Gordon Bushaw American, active 1970s
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoArtist unknown, possibly Katse (Comanche, Nʉmʉnʉʉ) Fort Sill, Indian Territory (now Lawton, Oklahoma)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoJoel Shapiro American, 1941-2025
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHarvard University, Institute of Geographic Exploration early 20th century
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoRobert Motherwell American, 1915-1991
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoEldzier Cortor American, 1916-2015
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLenore Tawney (American, 1907–2007) New York, United States
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoMarc Chagall French, born Belarus, 1887-1985
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoLouis Marcoussis (French, born Poland, 1878-1941) based on a poem by Guillaume Apollinaire (French, born Italy, 1880-1918)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoHonoré Victorin Daumier French, 1808-1879
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAlfred Caldwell (American, 1903–1998) William F. Deknatel (American, 1907–1973)
0% similarityCheck object rights; API metadata is openArt Institute of ChicagoAaron Siskind American, 1903–1991
0% similarityCheck object rights; API metadata is openComparable logic
| Comparable ID | Match | Price | Reasons |
|---|
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.