Swiss yellow gold open faced cylinder pendant watch Circa 1880

Gold key winding lady’s watch
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A Swiss 14 or 18 carat yellow gold open faced key winding pendant watch, circa 1880. With an engine turned case back, in the center, an escutcheon and a gilded metal cuvette. White enamel dial with radial Roman numerals, outer Arabic minute track and gilded metal hands. A gilt brass movement, going barrel, cylinder escapement, gilt brass monometallic balance and blued steel flat hairspring, polished steel index regulator.
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Diameter: 34 mm
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Weight: 27 g
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Signed:  No Name