Royal College of Nursing RCN union membership badge

A good original post 1953 nurses union badge; chromium plated rectangle shaped example with sunray border 'RCN' initials to the centre on blue enamel background, the reverse impressed with unusual maker's details 'AEW B'Ham'. Very good condition, complete with original pin fittings, no damage to the enamel. Size approx 26 x 16mm.