Swiss 18K gold key wind cylinder pocket watch Circa 1860

Gold open faced with ratchet key
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An early pocket watch with a gold ratchet key made by Patek in Geneva, Switzerland, circa 1860. The case of this watch, crafted from 18 carat gold, has a decoratively engraved and engine turned back with a vacant cartouche in the center. The white enamel dial has Roman hour numerals, outer minute divisions and very fine filigree hands. The key wind bar movement has a cylinder escapement..
The cuvette is numbered and signed.
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Diameter: 32.5 mm
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Weight: 21 g
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Signed: Patek Genève