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BERTIL VALLIEN. Skulptur, glasblock med ansikte, Kosta Boda, signerad.

Bertil Vallien · Sculpture · Helsingborgs Auktionskammare

Open auction lot
32
low priority

Acquisition position

Current all in cost

1750.22 SEK
Current bid or estimate1211.0 SEK
Modelled discount28.2%
Liquidity score68%

Potential market value

Specialist value interval

900 to 5500 SEK
Value confidence72%
Comparable sales30

Evidence strength

39%
Identity confidence31%
Visual match0%
External references12

Market anomaly

23%
Information gap67%
Potential undervaluation28.2%

Risk profile

8%
Authenticity risk8%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied

Decision guardrails

What must be verified

  • missing material
  • missing dimensions
  • missing foundry
  • missing edition

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistBertil Vallien
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionSmärre bruksslitage.
ProvenanceMissing
Modelsculpture_specialist 2.0.0

Höjd 22 cm.

Identity resolution

Artist and maker hypotheses

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

12 candidates
1 independent sources

Designed by Bertil Vallien Swedish, born 1938 Made by Kosta Boda Kosta, Småland, Sweden, founded 1742

Visual 0% · Name 53% · Marks 25% · Material 40%

27% combined confidence
1 independent sources

Designed by Vicke Lindstrand Swedish, 1904-1983 Kosta Glasbruk (now Kosta Boda) Kosta, Småland, Sweden, founded 1742

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

26% combined confidence
1 independent sources

Jean-Baptiste-Camille Corot (French, 1796-1875) printed by Auguste Delâtre (French, 1822-1907) published by Cadart et Chavalier, Editeurs (French, 1801-1900)

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

25% combined confidence
1 independent sources

Edward Kemeys (American, 1843–1907) American Bronze Founding Company (American, founded 1886) Chicago

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

25% combined confidence
1 independent sources

Lawrence Carmichael Earle American, 1845-1921

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

25% combined confidence
1 independent sources

Walter Shirlaw (American, 1838–1909)

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

25% combined confidence
1 independent sources

Gérard Edelinck (French, born Flanders, 1640-1707) after Hyacinthe Rigaud (French, 1659-1743)

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

25% combined confidence
1 independent sources

Georges Seurat (French, 1859–1891)

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

24% combined confidence
1 independent sources

Edward Hopper (American, 1882–1967)

Visual 0% · Name 34% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Fritz Pauli Swiss, 1891-1968

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

24% combined confidence
1 independent sources

Adolphe Appian French, 1818-1898

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

24% combined confidence
1 independent sources

David Dalhoff Neal (American, 1838–1915)

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

Vase

Designed by Bertil Vallien Swedish, born 1938 Made by Kosta Boda Kosta, Småland, Sweden, founded 1742

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

Head of a Girl

Designed by Vicke Lindstrand Swedish, 1904-1983 Kosta Glasbruk (now Kosta Boda) Kosta, Småland, Sweden, founded 1742

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

Portrait of Dr. Med. W. Minnich

Fritz Pauli Swiss, 1891-1968

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

Self-Portrait

Walter Shirlaw (American, 1838–1909)

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

Martin Vanden Bogaert Desjardins

Gérard Edelinck (French, born Flanders, 1640-1707) after Hyacinthe Rigaud (French, 1659-1743)

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

Remembrance of Italy

Jean-Baptiste-Camille Corot (French, 1796-1875) printed by Auguste Delâtre (French, 1822-1907) published by Cadart et Chavalier, Editeurs (French, 1801-1900)

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

Priest and Boy

Lawrence Carmichael Earle American, 1845-1921

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

A Sunday on La Grande Jatte — 1884

Georges Seurat (French, 1859–1891)

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

Fishing Craft near the Cliffs at Collioure

Adolphe Appian French, 1818-1898

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

Interior of St. Mark's, Venice

David Dalhoff Neal (American, 1838–1915)

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

Nighthawks

Edward Hopper (American, 1882–1967)

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

Lion (One of a Pair, South Pedestal)

Edward Kemeys (American, 1843–1907) American Bronze Founding Company (American, founded 1886) Chicago

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1611071%1900.0 SEKidentity 100%, material 45%, size 62%, title 92%, foundry or marks 45%
1197771%1300.0 SEKidentity 100%, material 45%, size 62%, title 91%, foundry or marks 45%
1145871%1900.0 SEKidentity 100%, material 45%, size 62%, title 91%, foundry or marks 45%
1765770%1500.0 SEKidentity 100%, material 45%, size 62%, title 81%, foundry or marks 45%
2269170%2700.0 SEKidentity 100%, material 45%, size 62%, title 80%, foundry or marks 45%
517470%5500.0 SEKidentity 100%, material 45%, size 62%, title 80%, foundry or marks 45%
1033469%3100.0 SEKidentity 100%, material 45%, size 62%, title 74%, foundry or marks 45%
1055869%2000.0 SEKidentity 100%, material 45%, size 62%, title 69%, foundry or 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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