Estonian kroon 4 days after the founding of the Estonian SSR, the last Estonian pre-WW II coin, the new 1 sent (date 1939), was issued. In 1927, before the kroon was officially introduced, 100 marka banknotes circulated with an "ÜKS KROON" (1 kroon) overprint. Eesti Pank introduced 10 krooni notes in 1928, followed by 5 and 50 krooni in 1929, 20 krooni in 1932 and 100 krooni in 1935. The kroon was reintroduced as Estonia's currency on 20 June 1992, replacing the Soviet ruble at a rate of 1 kroon = 10 rubles. (Each person was able to change a maximum of
Estonian kroon until 15 January 2011 at which point it ceased to be legal tender. However, the Eesti Pank will indefinitely exchange kroon banknotes and coins in any amount into euro. In 1992, banknotes were introduced in denominations of 1, 2, 5, 10, 25, 100 and 500 krooni. Some of the 5, 10, 25, 100 and 500 krooni notes were dated 1991. In 1994, a 50 krooni note was introduced. Unlike others, the 1 kroon and 50 krooni notes were issued only once. Notes in circulation before being replaced by the euro: In 1992, coins were introduced (some dated 1991) in denominations