MACAU. 500 Patacas, 1978. NGC PROOF-69 Ultra Cameo.Fr-1a; KM-13. 0.2347 oz AGW. Commemorating the 25th Anniversary of the Grand Prix. No Advertising on Car. Brilliantly proof, this 500 Patacas commemorative displays an ultra cameo pop and grasps upwards towards perfection, falling just tantalizingly short.