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Case

Left-hand (destro) crown at 9 o'clock

Probable

The JB200's crown sits at 9 o'clock rather than 3, so the watch is worn with the crown away from the back of the hand. It is the model's defining physical characteristic and it runs through both the original and the re-editions.

Part reference

Brand
Jacques Bianchi Marseille
Material
Stainless steel
Identifying marks
Crown and its guards machined into the left flank; the case is not a right-crown case reversed, so the whole asymmetry should read as designed rather than adapted. The movement inside is a conventional right-crown caliber rotated in the case, which is the ordinary way this is done.

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.

  • Destro configuration

    FactoryProbable

    Whole production

    Correct and defining. Unlike the left crown on a Heuer Caliber 11, which is a consequence of the movement's module, this is a design decision — so it says nothing about which caliber is inside and should not be read as a caliber check.

Documented on these references

Provenance of this record

Sources & Evidence

Primary sourceManufacturer documentation

Jacques Bianchi — manufacturer specifications and brand history

Jacques Bianchi, Marseille

Accessed
2026-08-18

Cited for

This referenceProbable

Last verified: Not yet reviewed