Robertsons 1980 Golly postman advertising badge variant RED BLUE pocket

A good original circa 1980's period 'Robertson's Golly GPO postman marmalades and Jam promotional badge', this example with scarce variant red and blue pocket, the reverse impressed with maker's details '©James Robertson & Sons Ltd'. Good condition, complete with original pin fittings with safety roller catch in good working order, no damage to the painted acrylic enamel finish, a few manufacturers minor flaws.Height approx 32mm.