WW1 On War Service 1914 munition workers badge by W.J.Dingley

A good original First World War period circular gilt badge with central Crown and title surround 'On War Service 1914' inlaid with dark blue enamel, the reverse impressed with scarce maker's details 'W.J.Dingley B'Ham'. Very good condition, complete with original buttonhole fitting, enamel perfect, gilt finish remains bright. Diameter 26mm.