Swiss 14K gold open faced chronograph watch Circa 1930

Gold open faced keyless lever watch with gold chain
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A fine and rare Swiss 14 carat yellow gold open faced Art Deco pocket watch with a chronograph mechanism, made by Bucherer in Lucerne, circa 1930. This exceptional timepiece has a mechanical crown winding movement with a lever escapement, spiral balance, and advance retard adjustment. The signed black lacquered dial features gold baton hour markers, an external minute track with fifth of a second graduations, an outer telemetric scale calibrated in kilometres, a vertical 30 minute register at 12 o’clock, a subsidiary seconds dial at 6 o’clock, a central chronograph seconds hand, and elegant gold hands. The watch is housed in a 14 carat solid yellow gold open faced case with a polished case back, a fluted winding crown, and a sturdy round suspension bow.
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This impressive watch includes a matching 18 carat gold chain weighing 10 g.
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Diameter: 41 mm
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Weight: 46.4 g
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Signed: Bucherer Lucerne