Vacheron & Constantin. A gold open-faced keyless watch, circa 1930.
Movement: lever escapement, 18 jewels, no. 415661.
Dial: gilt, applied dagger indexes, engine-turned subsidiary seconds.
Case: 18ct gold, snap-on back, no. 258661.
Signed: case, dial and movement.
Dimensions: diameter 44mm.
£700-£900