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DAVID ANDERSEN. Hänge, silver och emalj, Norge.

David Andersen · Silver and metalware · Auktionshuset Thörner & Ek

Open auction lot
41
low priority

Acquisition position

Current all in cost

789.23 SEK
Current bid or estimate400.0 SEK
Modelled discount31.5%
Liquidity score84%

Potential market value

Specialist value interval

600 to 1900 SEK
Value confidence74%
Comparable sales30

Evidence strength

40%
Identity confidence32%
Visual match0%
External references12

Market anomaly

45%
Information gap67%
Potential undervaluation31.5%

Risk profile

13%
Authenticity risk13%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied
  • auction estimate is materially below the specialist model
  • Large gap to recent market history
  • Estimate materially below specialist value

Decision guardrails

What must be verified

  • category trap check: silver plate
  • missing hallmarks
  • missing fineness
  • missing weight
  • missing date_letter

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

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

Höjd ca. 1,5 cm.

Identity resolution

Artist and maker hypotheses

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

9 candidates
1 independent sources

David Dalhoff Neal (American, 1838–1915)

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

33% combined confidence
1 independent sources

David Hockney English, 1937-2026

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

33% combined confidence
1 independent sources

Gerard David (Netherlandish, c. 1460–1523)

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

33% combined confidence
1 independent sources

David Smith American, 1906-1965

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

33% combined confidence
1 independent sources

David Hammons American, born 1943

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

33% combined confidence
1 independent sources

David Wojnarowicz American, 1954–1992

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

33% combined confidence
1 independent sources

Chim (David Seymour) American, born Poland, 1911–1956

Visual 0% · Name 48% · Marks 25% · Material 40%

27% combined confidence
1 independent sources

David Lucas (English, 1802-1881) after John Constable (English, 1776-1837)

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

25% combined confidence
1 independent sources

David Octavius Hill (Scottish, 1802–1870) and Robert Adamson (Scottish, 1821–1848)

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

25% 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

Interior of St. Mark's, Venice

David Dalhoff Neal (American, 1838–1915)

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

American Collectors (Fred and Marcia Weisman)

David Hockney English, 1937-2026

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

A child from the Sudeten region of Czechoslovakia plays with a homemade doll. Her family, temporarily housed in the ruins of a military barracks, were among thousands of displaced persons in the region, Vienna, Austria

Chim (David Seymour) American, born Poland, 1911–1956

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

Lamentation over the Body of Christ

Gerard David (Netherlandish, c. 1460–1523)

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

Old Sarum

David Lucas (English, 1802-1881) after John Constable (English, 1776-1837)

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

Tanktotem I

David Smith American, 1906-1965

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

River Stour, Suffolk

David Lucas (English, 1802-1881) after John Constable (English, 1776-1837)

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

The cannon 'Mons Meg' at Edinburgh Castle, and a private in the 2nd battalion of Royal Scots who garrisoned the Castle in 1846

David Octavius Hill (Scottish, 1802–1870) and Robert Adamson (Scottish, 1821–1848)

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

Salisbury Cathedral from the Meadows: the Rainbow

David Lucas (English, 1802-1881) after John Constable (English, 1776-1837)

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

Phat Free

David Hammons American, born 1943

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

Untitled

David Wojnarowicz American, 1954–1992

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

Tereska, a Child in a Residence for Disturbed Children, Grew Up in a Concentration Camp. She Drew a Picture of "Home" on the Blackboard, Poland

Chim (David Seymour) American, born Poland, 1911–1956

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1954366%1004.0 SEKidentity 100%, material 45%, size 62%, title 77%, hallmarks 45%, weight 62%
1414866%1400.0 SEKidentity 100%, material 45%, size 62%, title 66%, hallmarks 45%, weight 62%
851966%800.0 SEKidentity 100%, material 45%, size 62%, title 67%, hallmarks 45%, weight 62%
1554065%5573.0 SEKidentity 97%, material 45%, size 62%, title 66%, hallmarks 45%, weight 62%
1220559%1225.0 SEKidentity 79%, material 45%, size 62%, title 49%, hallmarks 45%, weight 62%
1833059%1006.0 SEKidentity 76%, material 45%, size 62%, title 61%, hallmarks 45%, weight 62%
1193758%912.0 SEKidentity 76%, material 45%, size 62%, title 43%, hallmarks 45%, weight 62%
1199158%800.0 SEKidentity 76%, material 45%, size 62%, title 42%, 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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