French rose gold Louis XV cylinder precision watch Circa 1880

Rose gold precision watch by Auguste Ecalle
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A rare French 18 carat rose gold open faced Louis XV precision pocket watch, circa 1880. Fine miniature movement with cylinder escapement, screwed winding wheels. White enamel Louis XV dial with Roman hours and Arabic minutes, blued steel hands. Plain case. Cuvette signed.
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Diameter: 16 mm
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Weight: 6.6 g
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Signed: Auguste Ecalle Palais Royal Paris
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Auguste Ecalle is listed as ‘Horlogerie de Précision’ and ‘Chronometrier’ in the literature. He was also business partner of Dent in London. Pocket watches with a diameter of less than 20 mm are extremely rare, especially if they are equipped with high quality movements.