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ARMBANDSUR, Certina, guld på stål, Quartz.

Unknown maker or artist · Clocks and watches · Auktionshuset Thelin & Johansson

Open auction lot
0
low priority

Acquisition position

Current all in cost

510.0 SEK
Current bid or estimate300.0 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
ConditionGravyr på baksidan. Bruks- och åldersrelaterat slitage. Repor på glas. Ej funktionstestad, batteri slut.
ProvenanceMissing
Modelclocks_watches_specialist 2.0.0

Diameter 33mm. Märkt EOL 115119949.

Identity resolution

Artist and maker hypotheses

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

10 candidates
1 independent sources

Timothy O'Sullivan (American, born Ireland, 1840–1882) and Mark Klett (American, born 1952)

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

25% combined confidence
1 independent sources

Lee Friedlander American, born 1934

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

25% combined confidence
1 independent sources

Bernd Becher (German, 1931–2007) and Hilla Becher (German, 1934-2015)

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

25% combined confidence
1 independent sources

T'ai Hun Laos, Phong Saly Province, Muang Hun

Visual 0% · Name 38% · Marks 25% · Material 40%

25% combined confidence
1 independent sources

Jonathan De Pas (Italian,1932–1991) Donato D’Urbino (Italian, born 1935) Paolo Lomazzi (Italian, born 1936) Carla Scolari (Italian, born 1930's) Manufactured by Zanotta (Italian, founded 1954)

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

25% combined confidence
1 independent sources

Fabergé Workshop Saint Petersburg or Moscow, Russia, 1842-1917

Visual 0% · Name 36% · Marks 25% · Material 40%

25% combined confidence
1 independent sources

China

Visual 0% · Name 36% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Weddeghe Velstede (German, active 1432-73) container: Egyptian

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

24% combined confidence
1 independent sources

Gino Severini (Italian, 1883-1966) published by Guilde de la Gravure, Pully-Lausanne, Switzerland

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

24% combined confidence
1 independent sources

Henry Wilson (English, 1864-1934) England, London

Visual 0% · Name 32% · 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

Covered Ewer with Lizard-Shaped Handle

China

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

Reliquary Monstrance with a Tooth of Saint John the Baptist

Weddeghe Velstede (German, active 1432-73) container: Egyptian

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

"Diana" Diadem

Henry Wilson (English, 1864-1934) England, London

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

Pas de Deux

Gino Severini (Italian, 1883-1966) published by Guilde de la Gravure, Pully-Lausanne, Switzerland

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

Lee Friedlander, Philadelphia, PA

Lee Friedlander American, born 1934

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

Snuff Bottle with Monkey on Rockwork

China

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

Blow Chair

Jonathan De Pas (Italian,1932–1991) Donato D’Urbino (Italian, born 1935) Paolo Lomazzi (Italian, born 1936) Carla Scolari (Italian, born 1930's) Manufactured by Zanotta (Italian, founded 1954)

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

Snuff Bottle with Equestrian Bannerman with Flag

China

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

Quartz Mill near Virginia City

Timothy O'Sullivan (American, born Ireland, 1840–1882) and Mark Klett (American, born 1952)

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

Miniature Snail

Fabergé Workshop Saint Petersburg or Moscow, Russia, 1842-1917

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

Coal Tipple, Goodspring, Pa. Four Views

Bernd Becher (German, 1931–2007) and Hilla Becher (German, 1934-2015)

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

Skirt (Pa Sin)

T'ai Hun Laos, Phong Saly Province, Muang Hun

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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