Between 1946 and 1948, 20 and 50 haléřů and 1 and 2 koruny coins were introduced. The lower two denominations were struck in bronze, the higher two in cupro-nickel. The designs of all but the 2 koruny were based on those of the interwar coins but the coins were smaller. In 1950, aluminium 1 korun coins were introduced, followed by aluminium 20 and 50h in 1951. 5 korun coins were minted but not introduced. A monetary reform occurred in 1953.
1946–1953 issues Value Technical parameters Description Date of Diameter Mass Composition Edge Obverse Reverse first minting issue withdrawal 20 h 18 mm 2.5 g Brass92% copper8% zinc Smooth Coat of arms, "REPUBLIKA ČESKOSLOVENSKÁ","REPUBLIKA ČESKOSLOVENSKÁ" means "Republic, Czechoslovak" in Czech and Slovak year of minting Indication of value, ears of wheat, sickle 1947 29 May 1948 31 May 1953 20 h 16 mm 0.5 g 98% aluminium2% magnesium Smooth Coat of arms, "REPUBLIKA ČESKOSLOVENSKÁ", year of minting Indication of value, ears of wheat, sickle 1951 22 October 1951 31 May 1953 50 h 20 mm 3 g Brass92% copper8% zinc Smooth Coat of arms, "REPUBLIKA ČESKOSLOVENSKÁ", year of minting Indication of value, ears of wheat, branches with leaves 1947 25 March 1947 31 May 1953 50 h 18 mm 0.6 g 98% aluminium2% magnesium Smooth Coat of arms, "REPUBLIKA ČESKOSLOVENSKÁ", year of minting Indication of value, ears of wheat, branches with leaves 1951 1 September 1951 31 May 1953 1 Kčs 21 mm 4.5 g Cupronickel80% copper20% nickel Milled Indication of value, woman with ears of wheat and sickle 1946 25 April 1946 1 Kčs 1.3 g 98% aluminium2% magnesium 1947 17 March 1950 2 Kčs 23.5 mm 6 g Cupronickel80% copper20% nickel Indication of value, Juraj Jánošík 27 May 1947 5 Kčs ? 98% aluminium2% magnesium Indication of value, factory 1951 never —