Jewellery, Watches and Objects of Vertu

Omega. A steel open-faced keyless watch, circa 1920.
Movement: cal. 40.6L.T2.15P, lever escapement, 15 jewels.
Dial: white enamel, Arabic numerals, subsidiary seconds.
Case: steel, steel cuvette, 6905179.
Signed: case, dial and movement.
Dimensions: diameter 49mm.
£100-£150