Estonian kroon until the Soviet invasion in 1940 and Estonia's subsequent incorporation into the Soviet Union when it was replaced by the Soviet ruble. After Estonia regained its independence, the kroon was reintroduced in 1992. The kroon became the currency of Estonia on 1 September 1928 after having been a unit of account since 1924. It replaced the mark at a rate of 100 mark = 1 kroon. The kroon was subdivided into 100 sent. In 1924, the kroon was pegged to the Swedish krona at par, with a gold standard of 2480 kroon = 1 kilogram of pure gold. The standard
Ron Kroon (1965-1968), and contributing editor at AVRO Sportpanorama in the seventies. 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