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ARMBAND, 18K GULD.

Unknown maker or artist · Jewelry · Björnssons Auktionskammare

Open auction lot
0
low priority

Acquisition position

Current all in cost

1913.3 SEK
Current bid or estimate1502.0 SEK
Modelled discount0.0%
Liquidity score88%

Potential market value

Specialist value interval

Not calculated
Value confidence0%
Comparable sales0

Evidence strength

13%
Identity confidence28%
Visual match0%
External references9

Market anomaly

0%
Information gap86%
Potential undervaluation0.0%

Risk profile

8%
Authenticity risk8%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • Weak catalogue discovery
  • very short catalogue title may reduce bidder discovery

Decision guardrails

What must be verified

  • missing maker
  • missing marks
  • missing metal
  • missing gemstones
  • missing weight
  • missing measurements

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistMissing
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionMindre bruksslitage.
ProvenanceMissing
Modeljewelry_specialist 2.0.0

Längd 18cm. Vikt ca 1,9 gram.

Identity resolution

Artist and maker hypotheses

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

5 candidates
1 independent sources

Hans Memling

Visual 0% · Name 38% · Marks 25% · Material 40%

25% combined confidence
1 independent sources

Richard I. Chavez (San Felipe Pueblo, born 1949) Bernalillo, New Mexico

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

24% combined confidence
1 independent sources

Eva Eisler

Visual 0% · Name 30% · Marks 25% · Material 40%

23% combined confidence
1 independent sources

Juan Bautista Martínez del Mazo

Visual 0% · Name 29% · Marks 25% · Material 40%

23% combined confidence
1 independent sources

Jacometto (Jacometto Veneziano)

Visual 0% · Name 27% · Marks 25% · Material 40%

23% 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

9 references

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons

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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