Large Swiss 18K gold mandolin-form pendant watch Circa 1800

Gold, enamel, pearl- and diamond-set form watch by Marchand
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A large Swiss 18 carat gold, enamel, pearl-and diamond-set mandolin-form pendant watch, circa 1800. Gilt verge movement. Gold and white enamel dial with Arabic hours, the centre engine-turned, fine steel Breguet hands. Polychrome enamelled case, set with pearls and diamonds. Dial signed. Accompanied by, probably, the original gold and enamel key.
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Length: 68 mm
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Signed: Marchand