Acquisition position
Current all in cost
425.0 SEK
Current bid or estimate300.0 SEK
Modelled discount69.5%
Liquidity score82%
Gustaf Fogelberg · Paintings · Auktionshuset Thelin & Johansson
Acquisition position
Potential market value
Evidence strength
Market anomaly
Risk profile
Investigation rationale
Decision guardrails
Visual laboratory
Object record
Spännram 36 x 27 cm, rammått 43,5 x 34,5 cm Has resale rights.
Identity resolution
Ranked from independent evidence. Confirmation or rejection becomes controlled training data.
Run global research after adding the clearest available front, back, marks and label images.
Closed deal feedback
Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.
Learning guardrail
Global research evidence
Run global research to search museum and authority collections.
Comparable logic
| Comparable ID | Match | Price | Reasons |
|---|---|---|---|
| 17519 | 61% | 300.0 SEK | identity 63%, material 45%, size 62%, title 77% |
| 16241 | 59% | 300.0 SEK | identity 67%, material 45%, size 62%, title 49% |
| 17283 | 58% | 3000.0 SEK | identity 57%, material 45%, size 62%, title 76% |
| 14769 | 58% | 550.0 SEK | identity 62%, material 45%, size 62%, title 59% |
| 16635 | 57% | 1943.0 SEK | identity 60%, material 45%, size 62%, title 58% |
| 13861 | 56% | 300.0 SEK | identity 57%, material 45%, size 62%, title 60% |
| 15087 | 56% | 350.0 SEK | identity 52%, material 45%, size 62%, title 77% |
| 14844 | 55% | 300.0 SEK | identity 59%, material 45%, size 62%, title 43% |
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.