The euro was introduced on January 1, 1999, after a decade of planning: for the first three years, it was a 'invisible' currency, used only for accounting and electronic payments. On January 1, 2002, coins and banknotes were launched, and the largest currency transfer in history occurred in 12 EU members.
Between 1845 and 1939, Singapore used the Straits Dollar. In 1953, it was replaced by the Malayan Dollar, which was afterwards replaced by the Malaya and British Borneo Dollar. Singapore utilized this one currency until 1965, when the Malaysian, Singaporean, and Bruneian monetary union collapsed.