A 1916 'On War Service' Womens workers brass badge

This is a neat example of a triangular brass badge with the words 'ON WAR SERVICE' indented on its sides. At the centre of the triangle is a voided crown above the date '1916'. The number 312262 is marked on reverse as is the maker, Wylie & Co. London. The badge was introduced in 1916 for women involved in munitions production and was issued after the completion of two months' work. 'On War Service' badges were issued by the government and private firms from December 1914 onwards to signify that the wearer was engaged in essential war work.