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THERESIA HVORSLEV. Ring, Sterlingsilver, Granat.

Theresia Hvorslev · Jewelry · Garpenhus Auktioner

Open auction lot
19
low priority

Acquisition position

Current all in cost

1125.0 SEK
Current bid or estimate900.0 SEK
Modelled discount0.0%
Liquidity score88%

Potential market value

Specialist value interval

300 to 676 SEK
Value confidence68%
Comparable sales30

Evidence strength

37%
Identity confidence29%
Visual match0%
External references12

Market anomaly

0%
Information gap71%
Potential undervaluation0.0%

Risk profile

8%
Authenticity risk8%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied

Decision guardrails

What must be verified

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

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistTheresia Hvorslev
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionNo remarks.
ProvenanceMissing
Modeljewelry_specialist 2.0.0

Ring i sterlingsilver med granat Stämplad 925 Ringstorlek 17,5 mm Vikt 2,83 gram.

Identity resolution

Artist and maker hypotheses

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

8 candidates
1 independent sources

Suellen Rocca American, 1943-2020

Visual 0% · Name 43% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Greco-Roman, said to be found in Egypt

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

25% combined confidence
1 independent sources

Henri de Toulouse-Lautrec French, 1864-1901

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

25% combined confidence
1 independent sources

Greek

Visual 0% · Name 36% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Roman

Visual 0% · Name 36% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Olga de Amaral (Colombian, born 1932) Bogotá, Columbia

Visual 0% · Name 36% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

India Rajasthan

Visual 0% · Name 32% · Marks 25% · Material 40%

24% combined confidence
1 independent sources

Egyptian

Visual 0% · Name 30% · 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

12 references

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1126050%300.0 SEKidentity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62%
233950%300.0 SEKidentity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62%
238850%300.0 SEKidentity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62%
245650%300.0 SEKidentity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62%
298550%400.0 SEKidentity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62%
371750%300.0 SEKidentity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62%
547950%350.0 SEKidentity 45%, material 45%, size 62%, title 100%, hallmarks 45%, weight 62%
614750%300.0 SEKidentity 45%, material 45%, size 62%, title 100%, 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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