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Astrographic mystery display discs

Probable

The Astrographic's time display: markers mounted on transparent rotating discs in place of hands, so the indications appear to float unsupported over the dial. A construction rather than a decoration, and one whose correctness can only be judged with the watch running.

Part reference

Brand
Zodiac
Material
Transparent discs carrying applied markers
Introduced
1969

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.

  • Clear discs rotating concentrically

    FactoryProbable

    Whole production

    Markers moving smoothly with no wobble, holding their positions relative to each other, on discs that are effectively invisible. The illusion the watch exists for depends entirely on this.

  • Hazed, scratched or wobbling discs

    UnknownProbable

    Whole production

    Fifty-year-old transparent discs haze and scratch, and their mounting wears. On a period example this is usually condition rather than authenticity — but it has to be established as one or the other, since the same symptoms would follow from a rebuilt or substituted mechanism.

Open questions

OpenComponent compatibilityMedium

Astrographic mystery-disc mechanism and service availability

How is the Astrographic's disc drive constructed, and are parts or specialist servicing available for period examples?

Scope Determines whether a hazed or wobbling period Astrographic is a repairable condition problem or a permanent one, which is the difference between a service note and a substantial valuation finding. The catalog currently records the symptom without being able to say which.

Documented on these references

  • Zodiac AstrographicFactory

    Whole production

    Run the watch and watch the discs. Nothing about this component can be judged from a still photograph.

Provenance of this record

Sources & Evidence

Secondary sourceCollector research

Zodiac collector research on the period Sea Wolf and the Astrographic

Collector communities and specialist dealers

Accessed
2026-08-19

Cited for

This referenceProbable

Last verified: Not yet reviewed