United Road Transport Workers trade union badge

A scarce circa 1950's 'United Road Transport Workers of England' trade union badge; circular brass example with title circlet inlaid with white enamel, the centre bearing the intertwined letters 'URTW' upon a dark blue enamel ground, the reverse with maker's details 'Fattorini & Sons Ld. 36 Barr St. B'Ham'. Very good condition, retaining original buttonhole fitting, no damage to the enamel. Diameter 24mm.