Army Medical Services Schools of Nursing badge

A scarce ORIGINAL Elizabeth II period 'Army Medical Services Schools of Nursing State Registered Nurse badge'; silver plated example inlaid with blue enamel bearing 'Royal Crest' over crossed swords; the reverse impressed with maker's details 'FIRMIN'. Very good condition, complete with original pin fittings, no damage to the enamel, minimal service wear.Diameter approx 25mm.