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JOSEF FRANK. Ljusstake, "Vänskapsknuten", Firma Svenskt Tenn, Stockholm.

Josef Frank · Silver and metalware · Stockholms Auktionsverk Sickla

Open auction lot
42
low priority

Acquisition position

Current all in cost

2800.0 SEK
Current bid or estimate2800.0 SEK
Modelled discount37.6%
Liquidity score84%

Potential market value

Specialist value interval

972 to 9500 SEK
Value confidence74%
Comparable sales30

Evidence strength

38%
Identity confidence27%
Visual match0%
External references0

Market anomaly

50%
Information gap67%
Potential undervaluation37.6%

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
  • Estimate materially below specialist value

Decision guardrails

What must be verified

  • missing hallmarks
  • missing fineness
  • missing weight
  • missing date_letter

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistJosef Frank
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruksslitage, stearinrester, avlagringar.
ProvenanceMissing
Modelsilver_metalware_specialist 2.0.0

Ljusstake i mässing med plats för tre ljus Höjd ca 15,5 cm Bredd ca 20 cm.

Identity resolution

Artist and maker hypotheses

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

0 candidates
Research pending

No identity hypotheses yet

Run global research after adding the clearest available front, back, marks and label images.

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

0 references
Research pending

No external references stored

Run global research to search museum and authority collections.

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
2767%2810.0 SEKidentity 100%, material 45%, size 62%, title 92%, hallmarks 45%, weight 62%
945066%3208.0 SEKidentity 100%, material 45%, size 62%, title 79%, hallmarks 45%, weight 62%
368366%500.0 SEKidentity 100%, material 45%, size 62%, title 75%, hallmarks 45%, weight 62%
701466%2800.0 SEKidentity 100%, material 45%, size 62%, title 76%, hallmarks 45%, weight 62%
132066%9500.0 SEKidentity 100%, material 45%, size 62%, title 70%, hallmarks 45%, weight 62%
483566%4200.0 SEKidentity 100%, material 45%, size 62%, title 70%, hallmarks 45%, weight 62%
900366%7500.0 SEKidentity 100%, material 45%, size 62%, title 66%, hallmarks 45%, weight 62%
70566%2405.0 SEKidentity 100%, material 45%, size 62%, title 63%, 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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