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GUNNEL SAHLIN. Skulptur, glas, pumpa ur serien Frutteria, Kosta Boda.

Gunnel Sahlin · Art glass · Växjö Auktionskammare

Open auction lot
36
low priority

Acquisition position

Current all in cost

500.0 SEK
Current bid or estimate400.0 SEK
Modelled discount35.3%
Liquidity score76%

Potential market value

Specialist value interval

350 to 1843 SEK
Value confidence70%
Comparable sales30

Evidence strength

36%
Identity confidence27%
Visual match0%
External references12

Market anomaly

40%
Information gap50%
Potential undervaluation35.3%

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 signature
  • missing model
  • missing dimensions

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistGunnel Sahlin
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruksslitage.
ProvenanceMissing
Modelglass_specialist 2.0.0

Höjd 15 cm, bredd 13 cm.

Identity resolution

Artist and maker hypotheses

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

6 candidates
1 independent sources

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

Visual 0% · Name 49% · 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 47% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Urs Graf, the Elder (Swiss, 1485-1527/28) published by Johann Knobloch (German, born Switzerland, died 1528)

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

26% combined confidence
1 independent sources

Ure Tenshodo, publisher Japanese

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

25% combined confidence
1 independent sources

Aaron Siskind American, 1903–1991

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

25% combined confidence
1 independent sources

Urs Graf (Swiss, 1485-1527/29) assembled by Max Geisberg (Swiss, 1875-1943)

Visual 0% · Name 36% · 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

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 openArt Institute of Chicago

Pilate Washing His Hands, from Passio domini nostri Jesu Christi

Urs Graf, the Elder (Swiss, 1485-1527/28) published by Johann Knobloch (German, born Switzerland, died 1528)

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

The Last Supper and Christ Washing the Feet of his Disciples, plate nine from Passio domini nostri Jesu Christi

Urs Graf, the Elder (Swiss, 1485-1527/28) published by Johann Knobloch (German, born Switzerland, died 1528)

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

The Last Supper and Christ Washing the Feet of His Disciples, plate nine from Passio domini nostri Jesu Christi

Urs Graf, the Elder (Swiss, 1485-1527/28) published by Johann Knobloch (German, born Switzerland, died 1528)

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

Martha's Vineyard UR 127B

Aaron Siskind American, 1903–1991

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

Christ's Entry into Jerusalem, from Passio domini nostri Jesu Christi

Urs Graf, the Elder (Swiss, 1485-1527/28) published by Johann Knobloch (German, born Switzerland, died 1528)

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

Illustration from Postilla by Parisienses Guillermus, plate 37 from Woodcuts from Books of the XVI Century

Urs Graf (Swiss, 1485-1527/29) assembled by Max Geisberg (Swiss, 1875-1943)

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

The Agony in the Gardens and Christ's Arrest, plate ten from Passio domini nostri Jesu Christi

Urs Graf, the Elder (Swiss, 1485-1527/28) published by Johann Knobloch (German, born Switzerland, died 1528)

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

Mary Magdalen Washing Christ's Feet, plate four from Passio domini nostri Jesu Christi (recto); Christ Entering Jerusalem, plate five from Passio domini nostri Jesu Christi (verso)

Urs Graf, the Elder (Swiss, 1485-1527/28) published by Johann Knobloch (German, born Switzerland, died 1528)

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

Biko Somokuzu (Record of Plants to Stave Off Famine ), 3 vols.

Ure Tenshodo, publisher Japanese

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

Martha's Vineyard (UR 127B)

Aaron Siskind American, 1903–1991

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1344367%350.0 SEKidentity 100%, material 45%, size 62%, title 75%, factory marks 45%
1192667%566.0 SEKidentity 100%, material 45%, size 62%, title 74%, factory marks 45%
1141466%1843.0 SEKidentity 100%, material 45%, size 62%, title 63%, factory marks 45%
880756%5610.0 SEKidentity 72%, material 45%, size 62%, title 51%, factory marks 45%
807656%692.0 SEKidentity 72%, material 45%, size 62%, title 43%, factory marks 45%
1089854%350.0 SEKidentity 64%, material 45%, size 62%, title 47%, factory marks 45%
839252%1200.0 SEKidentity 59%, material 45%, size 62%, title 54%, factory marks 45%
942451%300.0 SEKidentity 58%, material 45%, size 62%, title 42%, 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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