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CECILIA & KARL-INGEMAR JOHANSSON. HALSRING, Silver, signerad, 1984 Göteborg.

Cecilia & Karl-Ingemar Johansson · Silver and metalware · Auktionshuset STO Bohuslän

Open auction lot
28
low priority

Acquisition position

Current all in cost

1125.0 SEK
Current bid or estimate600.0 SEK
Modelled discount17.9%
Liquidity score84%

Potential market value

Specialist value interval

500 to 2052 SEK
Value confidence70%
Comparable sales30

Evidence strength

39%
Identity confidence32%
Visual match0%
External references12

Market anomaly

14%
Information gap67%
Potential undervaluation17.9%

Risk profile

13%
Authenticity risk13%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied
  • Alias or spelling mismatch

Decision guardrails

What must be verified

  • category trap check: silver plate
  • missing hallmarks
  • missing fineness
  • missing weight
  • missing date_letter

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistCecilia & Karl-Ingemar Johansson
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruksskick.
ProvenanceMissing
Modelsilver_metalware_specialist 2.0.0

Diameter ca 12,5 cm Vikt 41 gram.

Identity resolution

Artist and maker hypotheses

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

9 candidates
1 independent sources

Ansel Adams American, 1902–1984

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

33% combined confidence
1 independent sources

Lee Krasner American, 1908-1984

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

33% combined confidence
1 independent sources

Al Hansen American, 1927-1995

Visual 0% · Name 45% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Richard Estes American, born 1932

Visual 0% · Name 45% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Louise Lawler American, born 1947

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

26% combined confidence
1 independent sources

Larry Sultan American, 1946–2009

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

25% combined confidence
1 independent sources

Ettore Sottsass, Jr. Italian, (born Austro-Hungarian Empire (now Austria), 1917-2007) Memphis Furniture, S.R.L. (Italian, founded 1981)

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

25% combined confidence
1 independent sources

Alfredo Jaar Chilean, born 1956

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

25% combined confidence
1 independent sources

Nam June Paik American, born Korea, 1932-2006

Visual 0% · Name 38% · 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

Andy Warhol Book, June 1984

Al Hansen American, 1927-1995

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

Business Week Cover, December 24, 1984

Alfredo Jaar Chilean, born 1956

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

Carlton Room Divider

Ettore Sottsass, Jr. Italian, (born Austro-Hungarian Empire (now Austria), 1917-2007) Memphis Furniture, S.R.L. (Italian, founded 1981)

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

Moonrise, Hernandez, New Mexico

Ansel Adams American, 1902–1984

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

Portrait of Rosette Loewenstein

Ansel Adams American, 1902–1984

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

Black and White

Lee Krasner American, 1908-1984

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

Portrait of Annette Rosenshine

Ansel Adams American, 1902–1984

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

Michigan Avenue with View of the Art Institute

Richard Estes American, born 1932

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

Mom Posing for Me, from the series "Pictures from Home"

Larry Sultan American, 1946–2009

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

Afternoon Sun, Crater Lake National Park, Oregon, No. 8 from "Portfolio Two: The National Parks and Monuments" (1950)

Ansel Adams American, 1902–1984

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

Monogram

Louise Lawler American, born 1947

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

1984 Invaders, from V-IDEA a priori

Nam June Paik American, born Korea, 1932-2006

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1598566%4700.0 SEKidentity 100%, material 45%, size 62%, title 75%, hallmarks 45%, weight 62%
968566%2000.0 SEKidentity 100%, material 45%, size 62%, title 71%, hallmarks 45%, weight 62%
80553%4200.0 SEKidentity 58%, material 45%, size 62%, title 51%, hallmarks 45%, weight 62%
1495652%8201.0 SEKidentity 57%, material 45%, size 62%, title 48%, hallmarks 45%, weight 62%
1638050%900.0 SEKidentity 45%, material 45%, size 62%, title 75%, hallmarks 45%, weight 62%
998050%1142.0 SEKidentity 45%, material 45%, size 62%, title 75%, hallmarks 45%, weight 62%
1259850%1200.0 SEKidentity 45%, material 45%, size 62%, title 71%, hallmarks 45%, weight 62%
831650%350.0 SEKidentity 49%, material 45%, size 62%, title 46%, 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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