Wegelin & Fils, Génve. A slim platinum open-faced keyless watch, circa 1915.
Movement: jewelled lever escapement, stamped with the seal of Geneva, no. 2021.
Dial: silvered, Arabic numerals, engine-turned subsidiary seconds.
Case: platinum, snap-on back, no. 2021.
Signed: dial and movement.
Dimensions: diameter 43mm.
£700-£900