Air Raid Precautions miniature ARP silver plate & enamel sprung pin badge

A scarce original circa wartime miniature size 'Air Raid Precautions silver plated badge', of delicate design possibly for a lady in the form of a blue enamel crowned A.R.P. shield mounted on an unusual slender sprung pin bar. Very good condition, no damage to the enamel Width 36mm. Height 19mm.