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CARL LARSSON. EFTER. "Barbro".

Carl Larsson · Prints and works on paper · Uppsala Auktionskammare

Open auction lot
41
low priority

Acquisition position

Current all in cost

528.73 SEK
Current bid or estimate350.0 SEK
Modelled discount61.0%
Liquidity score78%

Potential market value

Specialist value interval

300 to 3000 SEK
Value confidence70%
Comparable sales30

Evidence strength

39%
Identity confidence32%
Visual match0%
External references4

Market anomaly

58%
Information gap60%
Potential undervaluation61.0%

Risk profile

33%
Authenticity risk33%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied
  • all in acquisition cost is at least 55 percent below modelled value

Decision guardrails

What must be verified

  • authenticity wording: efter
  • missing technique
  • missing edition
  • missing sheet_size

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistCarl Larsson
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionEj examinerad ur ram. Rammått 57 x 43 cm.
ProvenanceMissing
Modelworks_on_paper_specialist 2.0.0

Etsning. I. 13,5 x 10,5 cm.

Identity resolution

Artist and maker hypotheses

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

3 candidates
1 independent sources

Designed by Märta Måås-Fjetterström (Swedish, 1873–1941) Executed by Barbro Nilsson (Swedish, 1899–1993) and the Märta Måås-Fjetterström Workshop Sweden, Båstad

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

33% combined confidence
1 independent sources

Vincent van Gogh

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

25% combined confidence
1 independent sources

Cecilia Edefalk Swedish, born 1954

Visual 0% · Name 37% · 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

4 references

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
49855%300.0 SEKidentity 74%, material 45%, size 62%, title 44%, edition 45%
463154%800.0 SEKidentity 70%, material 45%, size 62%, title 41%, edition 45%
529653%600.0 SEKidentity 64%, material 45%, size 62%, title 49%, edition 45%
1197653%5000.0 SEKidentity 64%, material 45%, size 62%, title 49%, edition 45%
2287152%500.0 SEKidentity 67%, material 45%, size 62%, title 34%, edition 45%
995452%815.0 SEKidentity 64%, material 45%, size 62%, title 41%, edition 45%
2222952%1600.0 SEKidentity 67%, material 45%, size 62%, title 32%, edition 45%
816752%300.0 SEKidentity 64%, material 45%, size 62%, title 41%, edition 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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