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PARTI BIJOUTERIER.

Parti Bijouterier · Jewelry · Auktionshuset Thörner & Ek

Open auction lot
23
low priority

Acquisition position

Current all in cost

843.72 SEK
Current bid or estimate409.0 SEK
Modelled discount0.0%
Liquidity score88%

Potential market value

Specialist value interval

271 to 700 SEK
Value confidence70%
Comparable sales30

Evidence strength

38%
Identity confidence30%
Visual match0%
External references17

Market anomaly

0%
Information gap71%
Potential undervaluation0.0%

Risk profile

8%
Authenticity risk8%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied
  • Potential valuable component inside a group
  • Weak catalogue discovery
  • very short catalogue title may reduce bidder discovery

Decision guardrails

What must be verified

  • missing marks
  • missing metal
  • missing gemstones
  • missing weight
  • missing measurements

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistParti Bijouterier
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionSkador förekommer.
ProvenanceMissing
Modeljewelry_specialist 2.0.0

Armband, örhängen med mera.

Identity resolution

Artist and maker hypotheses

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

17 candidates
1 independent sources

Gerhard Richter German, born 1932

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

27% combined confidence
1 independent sources

Caravaggio (Michelangelo Merisi)

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

26% combined confidence
1 independent sources

Eric Fischl American, born 1948

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

26% combined confidence
1 independent sources

Margaret Burroughs American, 1915-2010

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

25% combined confidence
1 independent sources

Francis Chapin American, 1899-1965

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

25% combined confidence
1 independent sources

Carlo Dolci

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

25% combined confidence
1 independent sources

James Van Der Zee American, 1886–1983

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

25% combined confidence
1 independent sources

Wolfgang Tillmans German, born 1968

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

25% combined confidence
1 independent sources

Leonardo da Vinci

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

25% combined confidence
1 independent sources

Jacques Louis David

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

25% combined confidence
1 independent sources

Mary Cassatt (American, 1844-1926) printed with Leroy (French, active 1876-1900)

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

24% combined confidence
1 independent sources

Lumb Stocks

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

24% combined confidence
1 independent sources

Félicien Rops Belgian, 1833-1898

Visual 0% · Name 32% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

James Tissot French, 1836-1902

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

24% combined confidence
1 independent sources

Seymour Rosofsky American, 1924-1981

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

24% combined confidence
1 independent sources

Isoda Koryusai Japanese, 1735-1790

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

24% combined confidence
1 independent sources

Katsukawa Shuncho Japanese, active c. 1780-1801

Visual 0% · Name 28% · Marks 25% · Material 40%

23% 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

17 references
The Met Open Access

The Musicians

Caravaggio (Michelangelo Merisi)

0% similarityCC0 when isPublicDomain is true
The Met Open Access

Saint Philip Neri (1515–1595)

Carlo Dolci

0% similarityCC0 when isPublicDomain is true
The Met Open Access

Studies for Hercules Holding a Club Seen in Frontal View, Male Nude Unsheathing a Sword, and the Movements of Water (recto); Study for Hercules Holding a Club Seen in Rear View (verso)

Leonardo da Vinci

0% similaritymetadata only or restricted image
The Met Open Access

The Last Toilet of Charlotte Corday

Lumb Stocks

0% similarityCC0 when isPublicDomain is true
The Met Open Access

The Death of Socrates

Jacques Louis David

0% similarityCC0 when isPublicDomain is true
Art Institute of Chicago

Birthday Party

Margaret Burroughs American, 1915-2010

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

Slumber Party

Eric Fischl American, born 1948

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

Hunting Party (Jagdgesellschaft)

Gerhard Richter German, born 1932

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

Afternoon Tea Party

Mary Cassatt (American, 1844-1926) printed with Leroy (French, active 1876-1900)

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

Wedding Party of Four

James Van Der Zee American, 1886–1983

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

A Picnic Party

Katsukawa Shuncho Japanese, active c. 1780-1801

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

Gibbon snatching sake pot from flower-viewing party

Isoda Koryusai Japanese, 1735-1790

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

At an Atheist Dinner-Party

Félicien Rops Belgian, 1833-1898

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

New Years Eve Party I

Francis Chapin American, 1899-1965

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

Cocktail Party

Seymour Rosofsky American, 1924-1981

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

birthday party I

Wolfgang Tillmans German, born 1968

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

A Children's Garden Party

James Tissot French, 1836-1902

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
904959%350.0 SEKidentity 79%, material 45%, size 62%, title 79%, hallmarks 45%, weight 62%
307050%1311.0 SEKidentity 53%, material 45%, size 62%, title 43%, hallmarks 45%, weight 62%
1133349%300.0 SEKidentity 45%, material 45%, size 62%, title 79%, hallmarks 45%, weight 62%
112949%1149.0 SEKidentity 45%, material 45%, size 62%, title 79%, hallmarks 45%, weight 62%
861849%2200.0 SEKidentity 45%, material 45%, size 62%, title 79%, hallmarks 45%, weight 62%
887448%300.0 SEKidentity 45%, material 45%, size 62%, title 56%, hallmarks 45%, weight 62%
1200948%300.0 SEKidentity 45%, material 45%, size 62%, title 50%, hallmarks 45%, weight 62%
1126048%300.0 SEKidentity 45%, material 45%, size 62%, title 50%, 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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