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Zenith open face pocket watch with agate case and 24-hour indication

ProbableCredible evidence exists but classification is not fully established.

Record status

Individual type · partial

Period

Circa 1930

Maker / issuer

Zenith

This open face pocket watch by Zenith dates to circa 1930 and features a 50.5 mm diameter case constructed from gold filled metal and carved agate. The dark agate case body is accented with natural lighter banding, paired with a reeded bezel.

The white enamel dial displays stylized Arabic numerals, an outer blue 24-hour track, a subsidiary seconds dial at 6 o'clock, and ornate dark hands. It is powered by a manual-wind keyless lever escapement movement signed by the maker.

Evidence at a glance

Linked sources
1
Photograph views
1
Catalogue references
0

Counts describe this entry’s documentation, not authenticity, rarity or completeness. Photographs may show one specimen; check each caption and licence.

Technical characteristics

Type
Open-face watch
Calibre
Manual, keyless lever
Diameter
50.5mm diameter
Materials
Gold filled and Agate
Signatures
Dial and movement signed
Manufacturer
Zenith
Place recorded
Switzerland
Date of production
Circa 1930
Maker / attribution
Zenith

Design

Visible features
• Reeded pattern around the inner gold-toned bezel ring. • Dark polished agate rim showing white horizontal banding on the sides. • Subsidiary seconds register positioned above the 6 o'clock marker. • Breguet-style open-tipped hour and minute hands.
Dial Layout and Display Features
The pocket watch features a white enamel dial with Arabic numerals and an outer 24-hour indication. The dial is also catalogued as signed by the maker. Direct visual inspection shows a subsidiary seconds register positioned above the 6 o'clock marker, as well as Breguet-style open-tipped hour and minute hands.
Case Construction and Hardstone Carving
The open-face pocket watch measures 50.5 mm in diameter and combines gold-filled metal with carved agate. According to the auction catalogue essay, the case back is produced from a single piece of agate displaying brownish to black tones and highlighted by white strips, accompanied by a reeded bezel. Observation of the front view confirms a dark polished agate rim showing white horizontal banding on the sides, surrounding an inner gold-toned bezel ring with a reeded pattern.
Reported Movement and Documentation Limits
The movement is catalogued as a manual-wind, keyless lever escapement caliber signed by Zenith, with the overall piece dated to circa 1930. The specific caliber number and movement or case serial numbers are not recorded in this source. In addition, the movement and the reverse of the agate case back are not visible in the available front image.

Identification

Source note
Facts transcribed from the linked source listing or collection record. Attribution and specifications are source-reported and have not been independently authenticated.

Catalogue references

No catalogue numbers recorded. Numbers are only published once transcribed from a verified edition of a standard catalogue — they are never inferred.

Research required

  • Research required: The case back and movement are not visible in the provided image.
  • Research required: Specific movement calibre designation is not stated in the source text.
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