Swiss fine hunting cased early keyless pocket watch Circa 1860

Gold hunting cased pocket watch by Patek Philippe & Cie.
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A fine Swiss hunting cased, early keyless pocket watch, circa 1860.
18 carat gold engine-turned case with monogram and gold hinged cuvette. White enamel dial with Roman hours, eccentric small seconds at 7:30 and blued steel Breguet hands. Frosted gilt movement with 19 jewels, “moustache” lever escapement, temperature compensation balance with gold adjustment screws and Philippe early one-directional winding/setting system.
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Diameter: 49 mm
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Weight: 92 g
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Signed: Patek Philippe & Cie, Geneva
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The watch employs Philippe’s keyless winding and setting system invented in 1845 which eventually led to the modern way of winding watches.