← Back to command center

ULRICA HYDMAN-VALLIEN. KAFFESERVIS, 19 delar, porslin samt glas.

Ulrica Hydman-Vallien · Art glass · Borås Auktionshall

Open auction lot
36
low priority

Acquisition position

Current all in cost

525.0 SEK
Current bid or estimate450.0 SEK
Modelled discount32.8%
Liquidity score76%

Potential market value

Specialist value interval

350 to 1600 SEK
Value confidence76%
Comparable sales30

Evidence strength

39%
Identity confidence27%
Visual match0%
External references12

Market anomaly

31%
Information gap67%
Potential undervaluation32.8%

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 factory
  • missing signature
  • missing model
  • missing dimensions

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistUlrica Hydman-Vallien
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruksslitage.
ProvenanceMissing
Modelglass_specialist 2.0.0

6 kaffekoppar, höjd 7 cm 6 kaffefat, diameter 13,5 cm 6 assietter, diameter 20 cm 1 skål, höjd 10 cm.

Identity resolution

Artist and maker hypotheses

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

12 candidates
1 independent sources

Louis H. Sullivan American, 1856-1924

Visual 0% · Name 44% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Ivan Albright (American, 1897–1983)

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

26% combined confidence
1 independent sources

Milton M. Schwartz American, 1925-2007

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

25% combined confidence
1 independent sources

Bruce Conner American, 1933–2008

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

25% combined confidence
1 independent sources

Andrea Geyer German, born 1971

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

25% combined confidence
1 independent sources

Various artists published by Multiples, Inc., New York

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

25% combined confidence
1 independent sources

Zoe Strauss American, born 1970

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

25% combined confidence
1 independent sources

Honoré Victorin Daumier French, 1808-1879

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

25% combined confidence
1 independent sources

Designed by Narcissa Niblack Thorne American, 1882-1966

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

25% combined confidence
1 independent sources

Graphic Thought Facility (British, founded 1990) Huw Morgan (English, born 1971) Paul Neale (English, born 1966) Andrew Stevens (English, born 1966)

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

25% combined confidence
1 independent sources

Mark Rothko (Marcus Rothkowitz) American, born Russia (Latvia), 1903–1970

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

25% combined confidence
1 independent sources

John Thomson Scottish, 1837–1921

Visual 0% · Name 36% · 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

Box for "Artists and Photographs"

Various artists published by Multiples, Inc., New York

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

Number 19

Mark Rothko (Marcus Rothkowitz) American, born Russia (Latvia), 1903–1970

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

The Statesman - 21 Story Apartment Building: Electrical Working Drawings, E1-E5

Milton M. Schwartz American, 1925-2007

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

11/19/73

Bruce Conner American, 1933–2008

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

Spiral Lands / Chapter 1

Andrea Geyer German, born 1971

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

Street Life in London

John Thomson Scottish, 1837–1921

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

Self-Portrait (No. 19)

Ivan Albright (American, 1897–1983)

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

The Week of the Perfect Game

Zoe Strauss American, born 1970

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

E-19: French Dining Room of the Louis XIV Period, 1660-1700

Designed by Narcissa Niblack Thorne American, 1882-1966

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

System of Architectural Ornament, Plate 19, Untitled

Louis H. Sullivan American, 1856-1924

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

Frieze Art Fair: Yearbook, VIP Diary, Fair Map, VIP Cards, VIP Press Invitations and Marketing Flyers

Graphic Thought Facility (British, founded 1990) Huw Morgan (English, born 1971) Paul Neale (English, born 1966) Andrew Stevens (English, born 1966)

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

Proposal for improvement for the theatres in Paris, which will not fail to have its effect during the dog days, plate 4 from Croquis d’Été

Honoré Victorin Daumier French, 1808-1879

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1822167%700.0 SEKidentity 100%, material 45%, size 62%, title 74%, factory marks 45%
1830067%600.0 SEKidentity 100%, material 45%, size 62%, title 73%, factory marks 45%
2003767%4200.0 SEKidentity 100%, material 45%, size 62%, title 68%, factory marks 45%
1699267%1600.0 SEKidentity 100%, material 45%, size 62%, title 68%, factory marks 45%
2333767%1500.0 SEKidentity 100%, material 45%, size 62%, title 65%, factory marks 45%
1327967%650.0 SEKidentity 100%, material 45%, size 62%, title 67%, factory marks 45%
172567%1900.0 SEKidentity 100%, material 45%, size 62%, title 68%, factory marks 45%
800767%400.0 SEKidentity 100%, material 45%, size 62%, title 69%, factory marks 45%

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.

Open command centerDashboard Open specialist model labModels Show extreme candidatesFilter Show priority reviewsFilter