Czechoslovakia, Socialist Republic (1960-1989), Gold and Silver Proof Set 1968 (4) "Ducats of Prague", 10 and 5 Ducat gold and silver. Au 986/1000 g 52,47 Ag 1000/1000 g 38,00. The 10 ducats is numbered 896 and corresponds to the certificate number. Original box (torn flag ribbon) and certificate, the coins are in perfect condition. Proof