Swiss silver open faced cylinder clock watch Circa 1790

Silver watch with time, date and weekday indication
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A technical interesting and rare early watch with calendar and centre seconds, Switzerland circa 1790. A silver case, inside gilt, case punched A & T, splendid fire gilt movement, cylinder escapement, original enamel dial, time, date and weekday indication; centre seconds, enamel dial with restoration, altogether in very beautiful condition, in working order, rare.
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Diameter: 55 mm
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Weight: 100 g
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Signed: No Name