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
Ron Kroon Ron Kroon Ronald "Ron" Kroon (17 September 1942, Amsterdam – 12 July 2001, Huizen) was a Dutch freestyle swimmer who won two bronze medals at the 1962 European Aquatics Championships. He also competed at the 1960 and 1964 Summer Olympics with the best achievement of 8th place in the 4×100 meters medley relay. Between 1960 and 1964 he was four times national champion and set 12 national records in the 100 m freestyle event. He was the first Dutch athlete to swim 100 meters within 55 seconds. After his swimming career, Kroon became a photographer with photograph press agency Anefo