HANNU IKONEN. Smycken 4 delar, Armring, halsband, samt örhängen ett par.

Hannu Ikonen · Jewelry · Falun Auktionsbyrå

Open auction lot

research

Acquisition position

Current all in cost

600.0 SEK

Current bid or estimate300.0 SEK

Modelled discount85.1%

Liquidity score88%

Potential market value

Specialist value interval

700 to 9000 SEK

Value confidence68%

Comparable sales30

Evidence strength

36%

Identity confidence27%

Visual match0%

External references12

Market anomaly

82%

Information gap71%

Potential undervaluation85.1%

Risk profile

13%

Authenticity risk13%

Condition risk6%

Investigation rationale

Why this may be worth considering

maker or artist identity supplied
auction estimate is materially below the specialist model
all in acquisition cost is at least 55 percent below modelled value
all in acquisition cost is at least 75 percent below modelled value
Estimate materially below specialist value

Decision guardrails

What must be verified

category trap check: later replacement
missing marks
missing metal
missing gemstones
missing weight
missing measurements

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistHannu Ikonen

MakerMissing

MediumMissing

MaterialsMissing

Dimensions? × ? × ? cm

WeightMissing g

YearMissing

EditionMissing

MarksMissing

ConditionBruks- och åldersrelaterat slitage.

ProvenanceMissing

Modeljewelry_specialist 2.0.0

Diameter 6cm.

Identity resolution

Artist and maker hypotheses

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

12 candidates

1 independent sources

Artist unknown (Chinese, made for the American market) China

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

26% combined confidence

1 independent sources

Matthew Barney American, born 1967

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

25% combined confidence

1 independent sources

Edgar Miller, Designer American, 1899-1993 Holabird & Root, Architects Alfred Muenzenthaler, Fabricator

Visual 0% · Name 41% · Marks 25% · Material 40%

25% combined confidence

1 independent sources

Jean-Simon Chaudron (American, born France, 1758–1846) Anthony Rasch (American, c.1780–1858) Philadelphia

Visual 0% · Name 41% · Marks 25% · Material 40%

25% combined confidence

1 independent sources

Barbour Silver Co., Division of International Silver Company (American, 1892–1931) Chasing by Christopher M. Whalen (American, 1867–1932) Meriden, Connecticut

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

25% combined confidence

1 independent sources

Harry Bergen Wheelock, architect American, 1861-1934 Kristian Schneider, designer American, 1864-1935 Fabricated by: Northwestern Terra Cotta Company

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

25% combined confidence

1 independent sources

Heidi Norton American, born 1977

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

25% combined confidence

1 independent sources

Designed by Jean George Theobald (American, active 1920s-30s) Manufactured by Wilcox Silver Plate Company (American, 1867–1961), a division of International Silver Company (American, founded 1898) Meriden, Connecticut

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

25% combined confidence

1 independent sources

Lenox, Incorporated (American, founded 1889) Trenton, New Jersey

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

25% combined confidence

1 independent sources

Du Paquier Porcelain Manufactory (1719–44) Vienna

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

24% combined confidence

1 independent sources

Claire Zeisler (American, 1903-1991) Chicago, Illinois, United States

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

24% combined confidence

1 independent sources

Bernd Becher (German, 1931–2007) and Hilla Becher (German, 1934-2015)

Visual 0% · Name 32% · 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

Three-Piece Tea Set with Tray

Designed by Jean George Theobald (American, active 1920s-30s) Manufactured by Wilcox Silver Plate Company (American, 1867–1961), a division of International Silver Company (American, founded 1898) Meriden, Connecticut

Tea and Coffee Service

Jean-Simon Chaudron (American, born France, 1758–1846) Anthony Rasch (American, c.1780–1858) Philadelphia

Cremaster 2: Deseret

Matthew Barney American, born 1967

Spandrel Panel from the Western Methodist Book Exchange, Chicago, Illinois

Harry Bergen Wheelock, architect American, 1861-1934 Kristian Schneider, designer American, 1864-1935 Fabricated by: Northwestern Terra Cotta Company

Coffee or Chocolate Set

Lenox, Incorporated (American, founded 1889) Trenton, New Jersey

Coffee Set with Tray

Barbour Silver Co., Division of International Silver Company (American, 1892–1931) Chasing by Christopher M. Whalen (American, 1867–1932) Meriden, Connecticut

Diana Court Clerestory Windows

Edgar Miller, Designer American, 1899-1993 Holabird & Root, Architects Alfred Muenzenthaler, Fabricator

Coal Tipple, Goodspring, Pa. Four Views

Bernd Becher (German, 1931–2007) and Hilla Becher (German, 1934-2015)

Gaming Pieces

Du Paquier Porcelain Manufactory (1719–44) Vienna

#1016 of "The Collection"

Heidi Norton American, born 1977

Two Sauceboats and Two Covered Tureens from the Washington Memorial Service

Artist unknown (Chinese, made for the American market) China

Four Study Samples

Claire Zeisler (American, 1903-1991) Chicago, Illinois, United States

Comparable logic

Specialist model explanation

30 category specific sold comparables selected
model uses jewelry specific identity, material, size and documentary fields
value interval uses weighted 20th, 50th and 80th percentiles with a dispersion adjustment
explicit category supplied

Comparable ID	Match	Price	Reasons
16003	53%	3000.0 SEK	identity 61%, material 45%, size 62%, title 51%, hallmarks 45%, weight 62%
4161	49%	10380.0 SEK	identity 45%, material 45%, size 62%, title 64%, hallmarks 45%, weight 62%
2304	49%	9000.0 SEK	identity 48%, material 45%, size 62%, title 44%, hallmarks 45%, weight 62%
17370	49%	3911.0 SEK	identity 45%, material 45%, size 62%, title 60%, hallmarks 45%, weight 62%
12421	49%	10500.0 SEK	identity 48%, material 45%, size 62%, title 42%, hallmarks 45%, weight 62%
15672	48%	655.0 SEK	identity 45%, material 45%, size 62%, title 59%, hallmarks 45%, weight 62%
19235	48%	3000.0 SEK	identity 48%, material 45%, size 62%, title 38%, hallmarks 45%, weight 62%
20712	48%	2920.0 SEK	identity 45%, material 45%, size 62%, title 54%, 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

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.

Current all in cost

Specialist value interval

Why this may be worth considering

What must be verified

Add and compare research imagery

Known facts and missing information

Artist and maker hypotheses

Artist unknown (Chinese, made for the American market) China

Matthew Barney American, born 1967

Edgar Miller, Designer American, 1899-1993 Holabird & Root, Architects Alfred Muenzenthaler, Fabricator

Jean-Simon Chaudron (American, born France, 1758–1846) Anthony Rasch (American, c.1780–1858) Philadelphia

Barbour Silver Co., Division of International Silver Company (American, 1892–1931) Chasing by Christopher M. Whalen (American, 1867–1932) Meriden, Connecticut

Harry Bergen Wheelock, architect American, 1861-1934 Kristian Schneider, designer American, 1864-1935 Fabricated by: Northwestern Terra Cotta Company

Heidi Norton American, born 1977

Designed by Jean George Theobald (American, active 1920s-30s) Manufactured by Wilcox Silver Plate Company (American, 1867–1961), a division of International Silver Company (American, founded 1898) Meriden, Connecticut

Lenox, Incorporated (American, founded 1889) Trenton, New Jersey

Du Paquier Porcelain Manufactory (1719–44) Vienna

Claire Zeisler (American, 1903-1991) Chicago, Illinois, United States

Bernd Becher (German, 1931–2007) and Hilla Becher (German, 1934-2015)

Teach the valuation model

Truth before training

Reference material found elsewhere

Three-Piece Tea Set with Tray

Tea and Coffee Service

Cremaster 2: Deseret

Spandrel Panel from the Western Methodist Book Exchange, Chicago, Illinois

Coffee or Chocolate Set

Coffee Set with Tray

Diana Court Clerestory Windows

Coal Tipple, Goodspring, Pa. Four Views

Gaming Pieces

#1016 of "The Collection"

Two Sauceboats and Two Covered Tureens from the Washington Memorial Service

Four Study Samples

Specialist model explanation

Every artwork image is checked for signatures and marks

No automatic mark result yet

Isolate and identify signatures, hallmarks and maker marks

Match an unknown mark

Add a known reference

Check consistency with known genuine variation

No forensic check yet