57.47 mm; 142.46 gms. cf.Eimer-2140 Gold By: L. Durbi. Struck to commemorate the Marriage of Charles, Prince of Wales to Lady Diana Spencer. Conjoined busts left, legend around; Reverse: Three plumes within crown and banner flanked by date, legend around. Hallmarks and serial # 0155 on edge.,GEM BRILLIANT PROOF...