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
Economic and Monetary Union of the European Union Kingdom, whose EU membership predates the introduction of the euro, have legal opt outs from the EU Treaties granting them an exemption from this obligation. The remaining seven non-euro member states are obliged to enter the third stage once they comply with all convergence criteria. The idea of an economic and monetary union in Europe was first raised well before establishing the European Communities. For example, the Latin Monetary Union existed from 1865-1927. In the League of Nations, Gustav Stresemann asked in 1929 for a European currency against the background of an increased economic division due to a number of