Jewellery, Watches and Objects of Vertu

Swiss. A gold open-faced keyless watch, 1911.
Movement: manual winding, 15 jewels.
Dial: white enamel dial, Arabic numerals, subsidiary seconds.
Case: 9ct gold, gold cuvette, no. 5298, Chester hallmark for 1911, markers mark BB.
Signed: unsigned.
Dimensions: diameter 49mm. £300-£400