Jewellery, Watches and Objects of Vertu

Swiss. A silver trench watch with black and white dial, circa 1917.
Movement: manual winding, lever escapement.
Dial: white enamel with black chapter ring, Arabic numerals, subsidiary seconds.
Case: silver, hinged back, wire lugs, no. 16615, London import mark for 1917.
Signed: unsigned.
Dimension: diameter 32mm. £100-£150