Swiss nickel dual time zone lever pocket watch Circa 1870

Nickel pocket watch with independent time zones
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A charming, open faced Swiss pocket watch with two dials for two independent time zones, circa 1870.
High-quality 3/4 plate movement with screw compensation balance. White enamel dial, flower-decorated, two meantime dials with Roman numerals and outer minute track, subsidiary constant seconds, gold Louis XV hands. Plain nickel case.
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Diameter: 50 mm
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Weight: 107 g
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Signed: No name