Fine Swiss silver open faced lever pocket watch Circa 1880

Silver watch accompanied by a key
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A fine Swiss silver open faced pocket watch accompanied by a key, circa 1880. A solid, polished case, hinged case back and a round bezel. White enamel dial with radial black Roman numerals, outer minute track. Set of stone pink gold Fancy hands. Nickel-plated movement, ten jewels, bimetallic balance, blued steel Breguet balance spring, index regulator.
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Thickness: 18 mm
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Diameter: 56 mm
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Signed: No Name
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Decoration of hairlines on the dial.