Swiss gold watch with perpetual calendar and moonphases Circa 1980

Yellow and white gold open faced 
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A very fine and thin Swiss, keyless, 18 carat yellow and white gold keyless pocket watch, circa 1980. With perpetual calendar and phases of the moon. Lever escapement, champagne-coloured dial, yellow gold baton hands, subsidiary dials indicating day, and month combined with leap year indication, date and moon phases, triple-stepped bezels, sapphire-set crown and slide-to band, case, dial and movement signed.
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Diameter: 43 mm
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Thickness: 7 mm
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Signed: Gérald Genta  Genève
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Accompanied by the original fitted box and setting pin