An 18ct gold half hunting cased free-sprung keyless lever centre seconds chronograph

An 18ct gold half hunting cased free-sprung keyless lever centre seconds chronograph, the three quarter plate movement signed Goldsmiths & Silversmiths Company, 112 Regent St, London, no. 31862, raised barrel, blue steel spiral spring with overcoil free-sprung, in a plain heavy case, the chronograph button in the band, case by F. Toms, London 1911, 54mm diam.