WW1 On War Service 1914 munition workers badge Firmin London no issue number

A good original First World War official War Workers gilt badge with blue enamel title 'On War Service 1914', the reverse with maker's details 'Firmin & Sons Ltd London'. Good condition, complete with original buttonhole fitting, no damage to the enamel but with service wear.
Diameter approx 26mm.

Code: 63479