Swiss 18K yellow gold open faced pocket watch Circa 1965

Gold fob watch 
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A fine and attractive Swiss 18 carat yellow gold open faced keyless pocket watch, made by Baume des Breuleux in Geneva, circa 1965. Solid, plain case with manual winding at 6 o’clock. White enamel dial with applied gold baton hour indexes, an outer minute track and gold hands. The movement with a lever escapement and 17 jewels. Dial and movement are signed.
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Diameter: 40 mm
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Signed: Baume des Breuleux  Geneva
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Accompanied by a satin and gold chain.