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ARMBANDSUR, stål, Ebel, automatic, 21 jewels.

Unknown maker or artist · Clocks and watches · Auktionshuset Thörner & Ek

Open auction lot
0
low priority

Acquisition position

Current all in cost

970.45 SEK
Current bid or estimate604.0 SEK
Modelled discount0.0%
Liquidity score94%

Potential market value

Specialist value interval

Not calculated
Value confidence0%
Comparable sales0

Evidence strength

14%
Identity confidence29%
Visual match0%
External references12

Market anomaly

0%
Information gap86%
Potential undervaluation0.0%

Risk profile

8%
Authenticity risk8%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • No positive signals have been confirmed yet.

Decision guardrails

What must be verified

  • missing maker
  • missing reference
  • missing serial
  • missing movement
  • missing case_material
  • missing service_history

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistMissing
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruks- och åldersrelaterat slitage. Repor. Fungerade vid katalogiseringstillfället. Ingen funktionsgaranti lämnas.
ProvenanceMissing
Modelclocks_watches_specialist 2.0.0

Automatisk. Ca. 33 mm.

Identity resolution

Artist and maker hypotheses

Ranked from independent evidence. Confirmation or rejection becomes controlled training data.

8 candidates
1 independent sources

Bertrand Goldberg American, 1913-1997

Visual 0% · Name 41% · Marks 25% · Material 40%

25% combined confidence
1 independent sources

Aaron Siskind American, 1903–1991

Visual 0% · Name 39% · Marks 25% · Material 40%

25% combined confidence
1 independent sources

Edward M. Corbett American, 1919-1971

Visual 0% · Name 39% · Marks 25% · Material 40%

25% combined confidence
1 independent sources

Georgia O'Keeffe (American, 1887–1986)

Visual 0% · Name 37% · Marks 25% · Material 40%

25% combined confidence
1 independent sources

Rineke Dijkstra Dutch, born 1959

Visual 0% · Name 35% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Designed by Narcissa Niblack Thorne American, 1882-1966

Visual 0% · Name 35% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Lalla Assia Essaydi Moroccan, born 1956

Visual 0% · Name 33% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Dayanita Singh Indian, born 1961

Visual 0% · Name 31% · Marks 25% · Material 40%

24% combined confidence

Closed deal feedback

Teach the valuation model

Enter the verified hammer price after the auction closes. Only verified outcomes become calibration data.

Learning guardrail

Truth before training

  • Unverified AI output is stored as a hypothesis only.
  • One-source matches are confidence capped.
  • Rejected matches improve source and feature calibration.
  • At least five verified closed sales are required per category.

Global research evidence

Reference material found elsewhere

12 references
Art Institute of Chicago

Myself Mona Ahmed

Dayanita Singh Indian, born 1961

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

National Opera House, Madrid, Spain

Bertrand Goldberg American, 1913-1997

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

E-21: French Boudoir of the Louis XV Period, 1740-60

Designed by Narcissa Niblack Thorne American, 1882-1966

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Drew, E.F. and Company, Chicago, Illinois, Working Drawings

Bertrand Goldberg American, 1913-1997

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Blue and Green Music

Georgia O'Keeffe (American, 1887–1986)

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Chicago 21

Aaron Siskind American, 1903–1991

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Converging Territories #21

Lalla Assia Essaydi Moroccan, born 1956

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Converging Territories #21

Lalla Assia Essaydi Moroccan, born 1956

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

"Brighton, England, August 21, 1992," from Beach Portraits

Rineke Dijkstra Dutch, born 1959

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Converging Territories #21

Lalla Assia Essaydi Moroccan, born 1956

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Drawing No. 21

Edward M. Corbett American, 1919-1971

0% similarityCheck object rights; API metadata is open
Art Institute of Chicago

Converging Territories #21

Lalla Assia Essaydi Moroccan, born 1956

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons

Automatic signature module

Every artwork image is checked for signatures and marks

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.

Candidate regions0
Signature regions0
AI enrichmentLocal only
PipelineNot run

No automatic mark result yet

The module runs during normal analysis when a local image is available.

Marks laboratory

Isolate and identify signatures, hallmarks and maker marks

110 independent methods generate cleanup variants, stroke and symbol descriptors, library matches, trust controls and conflict warnings.

Open mark library

Match an unknown mark

Upload the tightest available crop. Include a little surrounding surface so the system can separate paint, engraving, glare and background.

Add a known reference

Signature forensics

Check consistency with known genuine variation

This does not declare a signature genuine. It measures fit against a multi-source reference set, confusing signers and natural variation.

No forensic check yet

Run mark matching first, then compare the questioned signature against a sufficiently broad trusted reference set.

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