The coins of the World War II Slovak koruna (slovak: koruna slovenská) were the first coins ever minted by a Slovak state. These coins were minted in the Kremnica mint, once the common state mint of the whole Czechoslovak state. Coins carried not only monetary but also propaganda function: they showed the symbols of the Slovak nation and the just born independent Slovak state. Lower denominations were made of base metals, while those above 5 Ks contained silver.
References
Coins of the Slovak koruna (1939–45) Wikipedia(Text) CC BY-SA