Swiss lady’s miniature gold enamel pendant watch Circa 1840

Miniature watch with matching pin and winding key by Blondel & Melly
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A Swiss lady’s miniature gold enamel pendant watch with matching diamond-set gold enamel pin and matching winding key, circa 1840.
18 carat gold case, the back of dark blue translucent enamel over engine turning, with applied rose-cut diamond set rosette and a signed gold dome. Enamel dial with radial Roman numerals and blued Breguet hands. Miniature bridge movement, keywind, frosted and gilt, with ten jewels, cylinder escapement and three-arm balance.
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Diameter: 16 mm
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Weight: 5 g
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Signed: Blondel & Melly à Genève
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Blondel & Melly was based in Geneva in the early 19th century. A gold enamel watch is in the collection of the Metropolitan Museum of Art . A ladies’ pocket watch is exhibited in the Dresden Mathematical and Physical Salon.