Swiss open faced lever watch with American case Circa 1948

Gold lever watch by Vacheron & Constantin
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A Swiss 14 carat gold open faced keyless lever pocket watch with American case, circa 1948. Nickel-finished lever movement, 17 jewels, a bimetallic compensation balance, micrometre regulator. Silvered dial with applied gold baton and Roman numerals, an outer minute track and engine-turned subsidiary seconds at 6 o’clock. An American-made plain case with a stepped bezel, snap-on back. Case stamped V&C, dial and movement signed.
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Diameter: 43.5 mm
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Signed: Vacheron & Constantin Genève