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SIGURD WALDEMAR ÅHMAN. SAMISKT FAT I GRAVERAT TENN (26cm) HANDARBETE, SIGNERAT & DATERAT, H10 (1982) JOKKMOKK.

Sigurd Waldemar Åhman · Silver and metalware · Auktionskammaren Sydost Kalmar

Open auction lot
54
research

Acquisition position

Current all in cost

375.0 SEK
Current bid or estimate250.0 SEK
Modelled discount87.3%
Liquidity score84%

Potential market value

Specialist value interval

800 to 4400 SEK
Value confidence69%
Comparable sales30

Evidence strength

40%
Identity confidence36%
Visual match0%
External references12

Market anomaly

83%
Information gap67%
Potential undervaluation87.3%

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
  • all in acquisition cost is at least 55 percent below modelled value
  • all in acquisition cost is at least 75 percent below modelled value
  • Estimate materially below specialist value

Decision guardrails

What must be verified

  • missing hallmarks
  • missing fineness
  • missing weight
  • missing date_letter

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistSigurd Waldemar Åhman
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruks- och åldersrelaterat slitage.
ProvenanceMissing
Modelsilver_metalware_specialist 2.0.0

Diam 26 cm.

Identity resolution

Artist and maker hypotheses

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

11 candidates
1 independent sources

Designed by Josef Frank (Austrian, 1885–1967) Produced by Svenskt Tenn Sweden, Stockholm

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

33% combined confidence
1 independent sources

Ansel Adams American, 1902–1984

Visual 0% · Name 45% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

German or Austrian

Visual 0% · Name 45% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Nairy Baghramian German, born Iran, 1971

Visual 0% · Name 43% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Lan Ying (Chinese, 1585-c. 1664)

Visual 0% · Name 42% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Louis H. Sullivan American, 1856-1924

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

25% combined confidence
1 independent sources

Moche North coast, Peru

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

25% combined confidence
1 independent sources

Designed by Uno Åhrén Swedish, 1897-1977 Manufactured by Svenskt Tenn AB Stockholm, Sweden, founded 1924

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

25% combined confidence
1 independent sources

Edvard Munch Norwegian, 1863-1944

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

25% combined confidence
1 independent sources

John Delmester English, active 1755-c. 1763 London, England

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

24% combined confidence
1 independent sources

Alphonse Legros French, 1837-1911

Visual 0% · Name 35% · 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

Elevator Grille from the Chicago Stock Exchange, Chicago, Illinois

Louis H. Sullivan American, 1856-1924

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

Portrait of Sigurd Varian

Ansel Adams American, 1902–1984

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

Landscape in the Style of Ancient Masters: Artist's commentary

Lan Ying (Chinese, 1585-c. 1664)

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

Elements of Composite Armor

German or Austrian

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

The Truth in the Case of Mr. Waldemar

Alphonse Legros French, 1837-1911

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

Slip of the Tongue

Nairy Baghramian German, born Iran, 1971

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

The Fat Whore

Edvard Munch Norwegian, 1863-1944

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

Anakreon (Dress or Furnishing Fabric)

Designed by Josef Frank (Austrian, 1885–1967) Produced by Svenskt Tenn Sweden, Stockholm

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

Handle Spout Vessel Depicting Anal Sex

Moche North coast, Peru

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

Vegetable Tree (Dress or Furnishing Fabric)

Designed by Josef Frank (Austrian, 1885–1967) Produced by Svenskt Tenn Sweden, Stockholm

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

Table

Designed by Uno Åhrén Swedish, 1897-1977 Manufactured by Svenskt Tenn AB Stockholm, Sweden, founded 1924

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

Cruet Set

John Delmester English, active 1755-c. 1763 London, England

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
118053%3600.0 SEKidentity 60%, material 45%, size 62%, title 39%, hallmarks 45%, weight 62%
363249%800.0 SEKidentity 48%, material 45%, size 62%, title 40%, hallmarks 45%, weight 62%
326849%300.0 SEKidentity 48%, material 45%, size 62%, title 39%, hallmarks 45%, weight 62%
966249%1000.0 SEKidentity 45%, material 45%, size 62%, title 53%, hallmarks 45%, weight 62%
968549%2000.0 SEKidentity 47%, material 45%, size 62%, title 41%, hallmarks 45%, weight 62%
86749%4000.0 SEKidentity 45%, material 45%, size 62%, title 47%, hallmarks 45%, weight 62%
219049%1500.0 SEKidentity 45%, material 45%, size 62%, title 46%, hallmarks 45%, weight 62%
737249%250.0 SEKidentity 45%, material 45%, size 62%, title 47%, hallmarks 45%, weight 62%

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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