YUGOSLAVIA: 100 Dinara (1990) in silver (0,925) commemorating 1990 Chess Olympiad. State emblem within flat bottom circile on obverse. Petrovaradin clock tower, chessboard background on reverse. Inside slab by NGC "PF 69 ULTRA CAMEO / CHESS OLYMPIAD". Top pop in both companies. Cert number: 6633781-003. (KM 146).