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VIKTOR JANSSON. Brosch, silver med infattad bergskristall.

Viktor Jansson · Silver and metalware · Falun Auktionsbyrå

Open auction lot
54
research

Acquisition position

Current all in cost

375.0 SEK
Current bid or estimate300.0 SEK
Modelled discount83.8%
Liquidity score84%

Potential market value

Specialist value interval

600 to 4200 SEK
Value confidence70%
Comparable sales30

Evidence strength

39%
Identity confidence32%
Visual match0%
External references12

Market anomaly

84%
Information gap67%
Potential undervaluation83.8%

Risk profile

13%
Authenticity risk13%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied
  • auction estimate is materially below the specialist model
  • all in acquisition cost is at least 55 percent below modelled value
  • all in acquisition cost is at least 75 percent below modelled value
  • Estimate materially below specialist value
  • Large gap to recent market history
  • 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

ArtistViktor Jansson
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruks- och åldersrelaterat slitage.
ProvenanceMissing
Modelsilver_metalware_specialist 2.0.0

Längd 4cm. Stämplad.

Identity resolution

Artist and maker hypotheses

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

11 candidates
1 independent sources

Viktor Pavlovich Sokolov (Born Moscow, 1923; died Moscow, 1980) Andrei Ivanovich Plotnov (Born Dankov, 1916; died Dankov, 1997) Aleksei Ivanovich Mashistov (Birth and death dates unknown)

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

33% combined confidence
1 independent sources

Viktor Kolář Czechoslovakian, born 1941

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

33% combined confidence
1 independent sources

Barbour Silver Co., Division of International Silver Company (American, 1892–1931) Chasing by Christopher M. Whalen (American, 1867–1932) Meriden, Connecticut

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

33% combined confidence
1 independent sources

Viktor Pavlovich Sokolov (Born Moscow, 1923; died Moscow, 1980) Aleksei Ivanovich Mashistov (Birth and death dates unknown)

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

25% combined confidence
1 independent sources

Viktor Pavlovich Sokolov (Born Moscow, 1923; died Moscow, 1980) Inna Mikhailovna Levidova (Born St. Petersburg, 1916; died 1988)

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

25% combined confidence
1 independent sources

Victor Nikoleavich Deni Russian, 1893-1946

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

25% combined confidence
1 independent sources

Designed by Arthur Silver (English, 1853-1896) Produced by Silver Studio Sold by Liberty & Co. Ltd. France, Alsace

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

25% combined confidence
1 independent sources

Designed by Viktor Schreckengost (American, 1906–2008) Cowan Pottery Studio (American, 1913–1931) Rocky River, Ohio

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

24% combined confidence
1 independent sources

George Inness (American, 1825–1894)

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

24% combined confidence
1 independent sources

Felix Gonzalez-Torres American, born Cuba, 1957–1996

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

24% combined confidence
1 independent sources

Arthur Dove (American, 1880–1946)

Visual 0% · Name 33% · 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

Jazz Bowl

Designed by Viktor Schreckengost (American, 1906–2008) Cowan Pottery Studio (American, 1913–1931) Rocky River, Ohio

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

Narva is Liberated!

Viktor Pavlovich Sokolov (Born Moscow, 1923; died Moscow, 1980) Andrei Ivanovich Plotnov (Born Dankov, 1916; died Dankov, 1997) Aleksei Ivanovich Mashistov (Birth and death dates unknown)

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

Donbass Is Reviving!

Viktor Pavlovich Sokolov (Born Moscow, 1923; died Moscow, 1980) Aleksei Ivanovich Mashistov (Birth and death dates unknown)

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

Glory to Railway Workers, Heroes of Socialist Labor

Viktor Pavlovich Sokolov (Born Moscow, 1923; died Moscow, 1980) Inna Mikhailovna Levidova (Born St. Petersburg, 1916; died 1988)

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

The Fascist Fanatic Vampire Must Be Brought Before The World's Court!

Victor Nikoleavich Deni Russian, 1893-1946

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

Untitled

Viktor Kolář Czechoslovakian, born 1941

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

Untitled, from the series "Ostrava"

Viktor Kolář Czechoslovakian, born 1941

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

Silver Sun

Arthur Dove (American, 1880–1946)

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

Coffee Set with Tray

Barbour Silver Co., Division of International Silver Company (American, 1892–1931) Chasing by Christopher M. Whalen (American, 1867–1932) Meriden, Connecticut

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

"Untitled" (Silver Beach)

Felix Gonzalez-Torres American, born Cuba, 1957–1996

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

A Silver Morning

George Inness (American, 1825–1894)

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

Fleurs Stylises

Designed by Arthur Silver (English, 1853-1896) Produced by Silver Studio Sold by Liberty & Co. Ltd. France, Alsace

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1370462%1300.0 SEKidentity 89%, material 45%, size 62%, title 59%, hallmarks 45%, weight 62%
1708653%3500.0 SEKidentity 59%, material 45%, size 62%, title 44%, hallmarks 45%, weight 62%
968553%2000.0 SEKidentity 56%, material 45%, size 62%, title 63%, hallmarks 45%, weight 62%
1598553%4700.0 SEKidentity 56%, material 45%, size 62%, title 61%, hallmarks 45%, weight 62%
1942852%2200.0 SEKidentity 57%, material 45%, size 62%, title 45%, hallmarks 45%, weight 62%
1162752%600.0 SEKidentity 57%, material 45%, size 62%, title 46%, hallmarks 45%, weight 62%
273652%1377.0 SEKidentity 57%, material 45%, size 62%, title 43%, hallmarks 45%, weight 62%
2012552%1450.0 SEKidentity 57%, material 45%, size 62%, title 39%, 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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