Robertsons 1980 Golly train driver badge yellow green coupling

A scarce original 1980's 'Robertson's marmalades and Jam Golly train driver promotional badge', this example with yellow and green coupling, the reverse impressed with maker's details '©James Robertson & Sons P.M.Ltd'. Very good condition, complete with original pin fittings, safety roller catch in good working order, no damage to the painted enamel finish.Height approx 32mm.