← Back to command center

NANNA DITZEL. Cafébord, med underrede från Table Stable, samtida.

Nanna Ditzel · Furniture and design · Stockholms Auktionsverk Helsingborg

Open auction lot
21
low priority

Acquisition position

Current all in cost

2441.69 SEK
Current bid or estimate1000.0 SEK
Modelled discount0.0%
Liquidity score86%

Potential market value

Specialist value interval

400 to 3500 SEK
Value confidence69%
Comparable sales30

Evidence strength

36%
Identity confidence27%
Visual match0%
External references12

Market anomaly

0%
Information gap67%
Potential undervaluation0.0%

Risk profile

8%
Authenticity risk8%
Condition risk6%

Investigation rationale

Why this may be worth considering

  • maker or artist identity supplied
  • Large gap to recent market history

Decision guardrails

What must be verified

  • missing manufacturer
  • missing model
  • missing materials
  • missing dimensions

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistNanna Ditzel
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionBruksspår Fläckar / märken förekommer.
ProvenanceMissing
Modelfurniture_design_specialist 2.0.0

Skiva i massivt trä, höjd ca 74, diameter 75 cm.

Identity resolution

Artist and maker hypotheses

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

11 candidates
1 independent sources

Frans Floris, I (Netherlandish, by 1520–1570)

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

27% combined confidence
1 independent sources

Nanna Ditzel (Danish, 1923–2005) Jorgen Ditzel (Danish 1921–1969) Manufactured by Ludvig Pontoppidan (Danish, mid 20th century)

Visual 0% · Name 45% · Marks 25% · Material 40%

26% combined confidence
1 independent sources

Henri Matisse French, 1869–1954

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

20% combined confidence
1 independent sources

Frans Hals (Dutch, 1582–1666)

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

20% combined confidence
1 independent sources

Frans Francken II (Flemish, 1581–1642)

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

20% combined confidence
1 independent sources

Frans Snyders (Flemish, 1579-1657)

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

19% combined confidence
1 independent sources

Frans van den Wyngaerde (Flemish, 1614-1679) after Peter Paul Rubens (Flemish, 1577-1640)

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

19% combined confidence
1 independent sources

Follower of Frans Hals (Dutch, 1582–1666)

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

19% combined confidence
1 independent sources

Frans Pourbus the Younger (Flemish, 1569-1622)

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

19% combined confidence
1 independent sources

Workshop of Frans Hals (Dutch, 1582–1666)

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

19% combined confidence
1 independent sources

Anthony van Dyck Flemish, 1599-1641

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

19% 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

Still Life with Dead Game, Fruits, and Vegetables in a Market

Frans Snyders (Flemish, 1579-1657)

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

Portrait of an Artist

Follower of Frans Hals (Dutch, 1582–1666)

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

Portrait of a Lady

Frans Hals (Dutch, 1582–1666)

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

Basket Chairs

Nanna Ditzel (Danish, 1923–2005) Jorgen Ditzel (Danish 1921–1969) Manufactured by Ludvig Pontoppidan (Danish, mid 20th century)

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

Study Head of a Bearded Man

Frans Floris, I (Netherlandish, by 1520–1570)

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

Marie de’ Medici

Frans Pourbus the Younger (Flemish, 1569-1622)

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

The Rommel-Pot Player

Workshop of Frans Hals (Dutch, 1582–1666)

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

The Annunciation

Frans Francken II (Flemish, 1581–1642)

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

Frans Snyders

Anthony van Dyck Flemish, 1599-1641

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

Bacchus and Drunken Silenus—The Dream of Silenus

Frans van den Wyngaerde (Flemish, 1614-1679) after Peter Paul Rubens (Flemish, 1577-1640)

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

Frans Francken

Anthony van Dyck Flemish, 1599-1641

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

Apples

Henri Matisse French, 1869–1954

0% similarityCheck object rights; API metadata is open

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1637067%5500.0 SEKidentity 100%, material 45%, size 62%, title 63%, manufacturer labels 45%
575053%400.0 SEKidentity 62%, material 45%, size 62%, title 46%, manufacturer labels 45%
280648%400.0 SEKidentity 45%, material 45%, size 62%, title 59%, manufacturer labels 45%
487748%300.0 SEKidentity 45%, material 45%, size 62%, title 58%, manufacturer labels 45%
1710648%850.0 SEKidentity 45%, material 45%, size 62%, title 51%, manufacturer labels 45%
65148%58000.0 SEKidentity 45%, material 45%, size 62%, title 52%, manufacturer labels 45%
1152848%3500.0 SEKidentity 45%, material 45%, size 62%, title 51%, manufacturer labels 45%
1456748%3000.0 SEKidentity 45%, material 45%, size 62%, title 49%, manufacturer labels 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