Swiss gold half hunting cased pendant watch Circa 1860

Gold cylinder lady’s pendant watch
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A rare Swiss 18K yellow gold and enamel lady’s half hunting cased keyless pendant watch, circa 1860. With Adrien Philippe’s first patented stem wind and handsetting mechanism of 1845, without coasting. The front cover has a glazed aperture and radial dark blue Roman numerals, and the back cover has a dark blue champleve enamel monogram and a hinged gold cuvette. White enamel dial with radial Roman numerals, outer minute track and blued steel double spade hands. Matte gilt movement, eight jewels, wolf’s tooth winding, cylinder escapement, plain three-arm balance, blued steel flat balance spring, index regulator. Cuvette signed.
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Diameter: 28 mm
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Signed: Patek, Philippe & Co.  Genève
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The case is slightly chipped, and the movement has some scratches.
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The present watch uses Adrien Philippe’s first winding and hand setting mechanism, French patent No. 1317 of April 22, 1845. The winding pinion is fixed to the winding shaft. For winding the crown, it must be turned clockwise and cannot be turned back with that typical ratchet noise. To disengage the winding in order to set the hands, the winding crown can be pulled out. Very few watches survive with this early winding mechanism without coasting.