Swiss 18K rose gold open faced lever gentlemen’s watch Circa 1880

Rose gold gentlemen’s watch
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A Swiss 18 carat rose gold open faced pocket watch, circa 1880. The bridge and cock movement with a Lépine caliber, lever escapement, compensation balance and Breguet hairspring. White enamel dial with black Arabic hours, an outer minute track, outermost red Arabic five minute numerals, sunk subsidiary seconds at 6 o’clock and gold Louis XIV hands. The plain case is monogrammed on the back. Dial signed, case and movement signed.
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Diameter: 48 mm
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Weight: 87 g
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Signed: Patek, Philippe & Cie Genève
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The back cover is loose.