British Rail Sprinter Class Railway Service promotional pin badge

An exceptionally good original circa 1987 period 'British Rail Sprinter Service pin badge'; well designed silver plated large heavy duty example, depicting a black enamel stylized runner and 'British Railway double arrow logo' inset in red; the reverse impressed in relief 'GAS/PO 2918'. Very good condition, complete with original pin fittings, no defects to the enamel. Size 30 x 30mm.