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LISA LARSON. Figurin, "Johanna", delvis glaserat stengods, Gustavsberg, signerad undertill.

Lisa Larson · Ceramics and porcelain · Göteborgs Auktionsverk

Open auction lot
48
research

Acquisition position

Current all in cost

900.0 SEK
Current bid or estimate900.0 SEK
Modelled discount51.6%
Liquidity score80%

Potential market value

Specialist value interval

850 to 3450 SEK
Value confidence79%
Comparable sales30

Evidence strength

43%
Identity confidence36%
Visual match0%
External references11

Market anomaly

60%
Information gap67%
Potential undervaluation51.6%

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

Decision guardrails

What must be verified

  • missing factory
  • missing material
  • missing mark
  • missing dimensions

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistLisa Larson
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionNo remarks.
ProvenanceMissing
Modelceramics_specialist 2.0.0

Höjd 16 cm.

Identity resolution

Artist and maker hypotheses

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

6 candidates
1 independent sources

Johanna Calle Colombian, born 1965

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

33% combined confidence
1 independent sources

Johanna Lawrenson American, born 1942

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

33% combined confidence
1 independent sources

Johanna Sibylla Küsel (German, active late 17th-early 18th century) after Stefano della Bella (Italian, 1610-1664)

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

26% combined confidence
1 independent sources

Albrecht Dürer (German, 1471-1528) printed by Hieronymus Andreae (German, died 1556)

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

24% combined confidence
1 independent sources

Ernst Ludwig Kirchner German, 1880-1938

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

24% combined confidence
1 independent sources

Helen Hyde American, 1868-1919

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

11 references
Art Institute of Chicago

Trees (Árboles)

Johanna Calle Colombian, born 1965

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

Plate One from Raccolta di Vasi diversi di Stef. de la Bella Fiorentino

Johanna Sibylla Küsel (German, active late 17th-early 18th century) after Stefano della Bella (Italian, 1610-1664)

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

Plate Six from Raccolta di Vasi diversi di Stef. de la Bella Fiorentino

Johanna Sibylla Küsel (German, active late 17th-early 18th century) after Stefano della Bella (Italian, 1610-1664)

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

Head of Nina Hard (recto); Untitled (verso)

Ernst Ludwig Kirchner German, 1880-1938

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

Johanna

Helen Hyde American, 1868-1919

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

Plate Five from Raccolta di Vasi diversi di Stef. de la Bella Fiorentino

Johanna Sibylla Küsel (German, active late 17th-early 18th century) after Stefano della Bella (Italian, 1610-1664)

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

Plate Two from Raccolta di Vasi diversi di Stef. de la Bella Fiorentino

Johanna Sibylla Küsel (German, active late 17th-early 18th century) after Stefano della Bella (Italian, 1610-1664)

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

Plate Three from Raccolta di Vasi diversi di Stef. de la Bella Fiorentino

Johanna Sibylla Küsel (German, active late 17th-early 18th century) after Stefano della Bella (Italian, 1610-1664)

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

Plate Four from Raccolta di Vasi diversi di Stef. de la Bella Fiorentino

Johanna Sibylla Küsel (German, active late 17th-early 18th century) after Stefano della Bella (Italian, 1610-1664)

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

On "Memory Lane": "This is Memory Lane," Abbie Hoffman said, driving down Michigan Ave Saturday morning. "It's good to be home." Hoffman visits General Logan's statue accompanied by his companion, a very attractive woman (Johanna Lawrenson) he calls "Angel" because "she's my guardian", Chicago, December 1978

Johanna Lawrenson American, born 1942

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

Betrothal of Phillipp with Johanna, plate 15 from Historical Scenes from the Life of Emperor Maximilian I from the Triumphal Arch

Albrecht Dürer (German, 1471-1528) printed by Hieronymus Andreae (German, died 1556)

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1806668%2611.0 SEKidentity 100%, material 45%, size 62%, title 94%, factory marks 45%
1691168%1002.0 SEKidentity 100%, material 45%, size 62%, title 94%, factory marks 45%
1515268%850.0 SEKidentity 100%, material 45%, size 62%, title 94%, factory marks 45%
541168%1700.0 SEKidentity 100%, material 45%, size 62%, title 95%, factory marks 45%
632468%2600.0 SEKidentity 100%, material 45%, size 62%, title 94%, factory marks 45%
1531967%1141.0 SEKidentity 100%, material 45%, size 62%, title 91%, factory marks 45%
1571667%850.0 SEKidentity 100%, material 45%, size 62%, title 90%, factory marks 45%
1589967%1602.0 SEKidentity 100%, material 45%, size 62%, title 89%, 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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