WW1 London & South Western Railway L&SWR war service badge

A scarce original First World War period 1914-1918 war service lapel badge for the 'London & South Western Railway'; gilt blue enamel title surround, Crowned 'Railway Service' to the centre on white enamel ground, the reverse impressed with maker's details 'J.A.Wylie & Co' and official low issue number 'O 1762'. Very good condition, complete with original buttonhole lapel fitting, no enamel loss, minor manufacturers dimple flaw in the 12 o'clock position.Diameter approx 28mm.