Several series of coins have been issued under the reign of Elizabeth II, including the current series. The first was the 1953–1964 coins, which featured an effigy of the Queen designed by Mary Gillick, with a wreath of laurel in her hair. In 1959, the reverse of the 50-cent piece was redesigned. In 1957, the coat of arms of Canada had been simplified. The Queen had suggested that the Tudor crown be replaced by the crown of Edward the Confessor. The changes were reflected in the 1959 50-cent piece. The new reverse was modelled and designed by Thomas Shingles, updating the Canadian coat-of-arms.