1 Koruna Československá

Tuzex was Czechoslovakia's state-run hard currency retail network — a chain of shops where goods unavailable through normal socialist distribution could be purchased, but only with Tuzex bony, the scrip certificates issued in exchange for foreign currency surrendered to the state. These were not banknotes in any central bank sense; they were internal accounting instruments for a parallel economy designed to capture remittances from Czechs abroad and soak up foreign exchange from diplomats and tourists.

The 1960 series replaced an earlier postwar issue as the Tuzex network expanded. Possession of these certificates by ordinary citizens without a sanctioned source of foreign currency was technically illegal, which gave the bony a shadow-market premium and made them actively traded on the black market throughout the normalization period.