WW1 On War Service 1915 munition workers home front badge J.A.Wylie.

A good original First World War official 'On War Service 1915 munitions workers badge', the voided centre bearing the 'Board of Ordnance' shield; the reverse with maker's details stamped in relief 'J.A.Wylie & Co London' 'Z' and impressed with official issue number '31645'. Good condition, retaining original buttonhole fitting, crown mis-struck and lower centre section not pierced. Height 43mm.