Swiss 18 carat gold open faced lever dress watch Circa 1960

Gold pocket watch 
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A fine Swiss keyless 18 carat gold dress watch, circa 1960. 18-Jewel Cal. K1001 movement adjusted to temperature, position and isochronism, shock resistant suspension to monometallic balance, Seal of Geneva.
Silvered dial with applied baton numerals and blued hands. Plain florentine finish case, with a 9K gold chain, case, dial and movement signed. Length of chain 32.5 cm, 5.9 gr.
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Diameter: 42 mm
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Signed: Vacheron & Constantin Genève