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MAC HAMILTON. Självporträtt.

Mac Hamilton · Prints and works on paper · Stockholms Auktionsverk Magasin 5

Open auction lot
46
research

Acquisition position

Current all in cost

750.0 SEK
Current bid or estimate350.0 SEK
Modelled discount60.1%
Liquidity score78%

Potential market value

Specialist value interval

300 to 2692 SEK
Value confidence58%
Comparable sales6

Evidence strength

32%
Identity confidence27%
Visual match0%
External references0

Market anomaly

59%
Information gap60%
Potential undervaluation60.1%

Risk profile

8%
Authenticity risk8%
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
  • Weak catalogue discovery
  • very short catalogue title may reduce bidder discovery

Decision guardrails

What must be verified

  • missing technique
  • missing edition
  • missing sheet_size

Visual laboratory

Add and compare research imagery

Object record

Known facts and missing information

ArtistMac Hamilton
MakerMissing
MediumMissing
MaterialsMissing
Dimensions? × ? × ? cm
WeightMissing g
YearMissing
EditionMissing
MarksMissing
ConditionEj examinerad ur ram. Till synes god kondition.
ProvenanceMissing
Modelworks_on_paper_specialist 2.0.0

Etsning, 30,5 x 22 cm, inklusive ram 50 x 40 cm. Signerad och daterad Mac Hamilton 1980 samt numrerad ’1/35’. Inför Mac Hamiltons självporträtt från 1980 går tankarna osökt till Axel Fridell och dennes ”Självporträtt i sportmössa II” från 1933, ett verk som i sin tur kan sägas vara inspirerat av Rembrandts självporträtt från 1648. På så sätt kan man se Mac Hamiltons självporträtt som en länk i en lång kedja av grafiska självporträtt i konsthistorien. I Moderna Museets samlingar finns ett annat porträtt i etsning av Mac Hamilton med titeln ”Kåpa”. Det är utfört samma år som det nu aktuella självporträttet och liksom detta i en upplag på endast 35 exemplar. Mac Hamilton utbildade sig på Konstakademien 1978-83. Han har främst blivit känd för sina stilleben, utförda i både målningar och färgträsnitt. Sommaren 2008 hade Mac Hamilton en uppmärksammad utställning på Prins Eugens Waldemarsudde. Has resale rights.

Identity resolution

Artist and maker hypotheses

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

0 candidates
Research pending

No identity hypotheses yet

Run global research after adding the clearest available front, back, marks and label images.

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

0 references
Research pending

No external references stored

Run global research to search museum and authority collections.

Comparable logic

Specialist model explanation

Comparable IDMatchPriceReasons
1202549%22000.0 SEKidentity 58%, material 45%, size 62%, title 34%, edition 45%
1424649%1920.0 SEKidentity 58%, material 45%, size 62%, title 34%, edition 45%
1701748%300.0 SEKidentity 56%, material 45%, size 62%, title 30%, edition 45%
264748%500.0 SEKidentity 54%, material 45%, size 62%, title 36%, edition 45%
1930147%300.0 SEKidentity 52%, material 45%, size 62%, title 37%, edition 45%
1184147%550.0 SEKidentity 54%, material 45%, size 62%, title 29%, edition 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.

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