Extra thin Swiss 18 carat white gold watch with fob Circa 1960

White gold dress watch
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A very fine and rare, extra thin 18 carat white gold knife edged (montre couteau) keyless dress watch with an 18 carat white gold watch fob made by Vacheron Constantin SA in Geneva, Switzerland, circa 1960. Accompanied by a recent Vacheron & Constantin presentation box. A solid, polished and brushed, knife edged case. The fob with an applied ceremonial order on the reverse with the engraved initials BAB. A satin silver dial with applied white gold baton hour indexes and white gold hands. The rhodium plated movement is stamped with the Seal of Geneva quality mark, has Geneva striping decoration, 18 jewels, a straight line lever escapement, Gyromax balance adjusted to heat, cold, isochronism and five positions, flat balance spring and a shock absorber.
Dial, case and movement signed.
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Diameter: 41 mm
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Thickness: 6.5 mm
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Signed: Vacheron & Constantin Genève Swiss
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Couteau is a term used by Cartier to describe the type of ultra thin watches with knife edged cases, open faced or hunting cased models. These watches, with thicknesses of less than 4 mm for the open faced and less than 5 mm for the hunting cased version, are among the thinnest mechanical watches ever produced.