Swiss silver lever chronometer pocket watch Circa 1920

Sterling silver open faced pocket watch
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A high quality, probably unused Zenith deck chronometer with moon phase and power reserve, circa 1920.
A sterling silver pocket watch in original box, papers and Chronometer certificate.
Engine-turned, reeded, glazed movement, chronometer with nineteen jewels, lever escapement, Genèva stripes, silvered dial with power reserve indicator and moon phase.
Blued Breguet steel hand, new condition, presumably unused with original papers, instruction manual, original box and Chronometer certificate.
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Diameter: 60 mm
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Weight: 195 g
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Signed:  Zenith  Le Locle