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Case

Ventura asymmetric shield case (Arbib)

Probable

Richard Arbib's asymmetric shield, the most recognisable case shape in American watchmaking. Compound-curved, with a specific relationship between the two points and the lug line that is a tooling problem rather than a decoration problem — which is why it is the component to examine first on any Ventura.

Part reference

Brand
Hamilton
Maker
Hamilton Watch Company and its case suppliers
Material
14k gold, gold-filled, and later stainless steel
Introduced
1957
Identifying marks
Period cases carry the metal designation and the case-maker's marks inside the back.

Documented variations

Classification

FactoryDocumented as shipped from the factory for this reference and period.PeriodNot original to this watch, but correct for its production period.ServiceFitted by the manufacturer's own service network. Not a defect.AftermarketThird-party part. Affects originality, not authenticity.ModifiedGenuine parts in a configuration the factory did not sell. Affects originality and value, not authenticity.CounterfeitDeceptive reproduction intended to pass as genuine.UnknownEvidence on file does not settle the question.

  • Gold-filled with wear to the points

    FactoryHigh confidence

    Whole production

    Base metal showing as a pink or grey line at the shield points and lug edges. Honest wear on a gold-filled case and the expected condition of a worn example.

  • Re-plated case

    AftermarketProbable

    Whole production

    Uniform brightness with no wear at the points on a case whose markings say gold-filled. A restoration, not a counterfeit, but it removes the wear evidence that would otherwise corroborate the watch's age.

  • Modern reproduction case

    CounterfeitProbable

    Whole production

    Reproduction Ventura cases are made and are most often found holding a genuine period 500 or 505 movement. The tells are inside: interior finishing that is too clean, modern machining marks, and case markings inconsistent with period case-maker conventions.

Documented on these references

  • Hamilton Ventura (1957 Electric)Factory

    1957–1963

    Judge the case geometry before the dial. The dial is a printing problem; the case is a tooling problem.

  • Hamilton H24411732Factory

    Whole production

    The modern steel execution of the same geometry. Shape shared with the 1957 watch; nothing else is.

Provenance of this record

Sources & Evidence

Secondary sourceCollector research

Hamilton collector research on the electric calibers, named models and case reproduction

Collector communities and specialist dealers

Accessed
2026-08-19

Cited for

This referenceProbable

Last verified: Not yet reviewed