Swiss gold half hunting cased lady’s pendant watch Circa 1860

Gold cylinder watch with enamel monogram
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A very small Swiss, 18 carat yellow gold and enamel keyless half hunting cased pendant watch, circa 1860. With Adrien Philippe’s first patented stem-wind and hand setting mechanism of 1845 without coasting. The front cover with glazed aperture, and radial dark blue Roman numerals. The back cover with 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 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.