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THOMAS HELLSTRÖM. fat, stengods, Nittsjö.

Thomas Hellström · Ceramics and porcelain · Karljohan Auktioner

Open auction lot
48
research

Acquisition position

Current all in cost

360.27 SEK
Current bid or estimate250.0 SEK
Modelled discount54.7%
Liquidity score80%

Potential market value

Specialist value interval

300 to 1701 SEK
Value confidence70%
Comparable sales30

Evidence strength

40%
Identity confidence36%
Visual match0%
External references12

Market anomaly

60%
Information gap67%
Potential undervaluation54.7%

Risk profile

8%
Authenticity risk8%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied
  • auction estimate is materially below the specialist model

Decision guardrails

What must be verified

  • missing factory
  • missing material
  • missing mark
  • missing dimensions

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistThomas Hellström
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionNo remarks.
ProvenanceMissing
Modelceramics_specialist 2.0.0

Diameter 38,5 cm.

Identity resolution

Artist and maker hypotheses

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

10 candidates
1 independent sources

Thomas Cole (American, born England, 1801–1848)

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Alma Thomas American, 1891–1978

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Thomas Hicks American, 1823–1890

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Thomas Birch American, born England, 1779–1851

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Thomas Hart Benton (American, 1889–1975)

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Thomas Struth German, born 1954

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Thomas Fearnley (Norwegian, 1802–1842)

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Thomas Doughty American, 1793–1856

Visual 0% · Name 86% · Marks 25% · Material 40%

33% combined confidence
1 independent sources

Woven by Thomas Stevens (English, 1828-88) Coventry, England

Visual 0% · Name 47% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Hans Thoma (German, 1839–1924)

Visual 0% · Name 44% · Marks 25% · Material 40%

26% 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

Distant View of Niagara Falls

Thomas Cole (American, born England, 1801–1848)

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

Starry Night and the Astronauts

Alma Thomas American, 1891–1978

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

A Friendly Warning

Thomas Hicks American, 1823–1890

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

Capture of the Tripoli by the Enterprise

Thomas Birch American, born England, 1779–1851

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

New England Scenery

Thomas Cole (American, born England, 1801–1848)

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

Cotton Pickers

Thomas Hart Benton (American, 1889–1975)

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

"The London & York Royal Mail Coach"

Woven by Thomas Stevens (English, 1828–88) Coventry, England

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

Art Institute of Chicago II, Chicago

Thomas Struth German, born 1954

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

Pergola with Oranges

Thomas Fearnley (Norwegian, 1802–1842)

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

Coming Squall (Nahant Beach with a Summer Shower)

Thomas Doughty American, 1793–1856

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

Apollo and Marsyas

Hans Thoma (German, 1839–1924)

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

Commemorative Bookmark "Centennial U.S.A."

Woven by Thomas Stevens (English, 1828-88) Coventry, England

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1142368%550.0 SEKidentity 100%, material 45%, size 62%, title 94%, factory marks 45%
233066%1701.0 SEKidentity 100%, material 45%, size 62%, title 79%, factory marks 45%
874566%300.0 SEKidentity 100%, material 45%, size 62%, title 79%, factory marks 45%
341351%500.0 SEKidentity 57%, material 45%, size 62%, title 43%, factory marks 45%
1044350%700.0 SEKidentity 57%, material 45%, size 62%, title 39%, factory marks 45%
761350%1200.0 SEKidentity 55%, material 45%, size 62%, title 43%, factory marks 45%
387550%300.0 SEKidentity 52%, material 45%, size 62%, title 53%, factory marks 45%
461150%300.0 SEKidentity 52%, material 45%, size 62%, title 53%, factory marks 45%

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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