Fine half-hunting cased Swiss keyless pocket watch made Circa 1880

Gold half-hunting cased keyless pocket watch
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A fine 18 carat gold half-hunting cased Swiss keyless pocket watch. Made by Patek Philippe & Co., Genève Circa 1880.
Four-body, bassine and polished case with on its front cover a glazed aperture and radial black champlevé enamel Arabic numerals and its back with engraved monogram. Hinged gold cuvette.
White enamel dial with radial Roman numerals outer minute track subsidiary seconds. Blued steel double spade hands.
Matte gilt movement with 15 jewels wolf’s tooth winding moustache straight-line lever escapement cut bimetallic compensation balance blued steel flat balance spring and an index regulator.
Case and cuvette signed and numbered.
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Diameter: 47 mm
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Signed: Patek Philippe & Co., Genève