Rare Swiss heavy gold dead seconds chronograph Circa 1890

Heavy gold dead seconds chronograph watch
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A rare Swiss heavy gold open faced dead seconds chronograph watch, circa 1890, jeweled gilt lever à moustache movement, cut bimetallic balance, wolf’s tooth winding.
White enamel dial, Roman numerals, outer track, subsidiary dial for constant seconds, central jumping seconds hand, 18k gold case, coaxial chronograph button, gold cuvette, case with makers mark JL.
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Diameter: 55 mm
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Signed: No name