1978, Czechoslovakia (Socialist Republic). Proof Silver 100 Korun “Charles IV” Coin. Mint Year: 1978 Condition: Proof! References: KM-93. Denomination: 100 Korun - 600th Anniversar of the Death of Charles IV of Bohemia Material: Silver (.700) Diameter: 33mm Weight: 15gm Charles IV (Czech: Karel IV.; German: Karl IV.; Latin: Carolus IV; 14 May 1316 – 29 November 1378), born Wenceslaus ...