Commemorative coins of Canada note issued by the Bank of Canada and the Voyageur dollar. For the list of commemorative one dollar coins issued by the Mint since 1987, see: Loonie. The fifty cent coin has borne the Canadian coat of arms on its reverse since the current coin designs were introduced in 1937. There were minor changes to the design of the arms in 1959, when the depiction of the arms was simplified. As well, the Queen suggested that the Tudor crown on the arms be replaced with the crown of St Edward the Confessor. Although a circulating coin, the fifty-cent coin is
Coins of the Australian dollar 94.13 Australian 1966 round 50¢ coins make up a fine kilogram of silver. "Gold" one-dollar and two-dollar coins were introduced in the 1980s. The one-dollar coin was introduced in 1984, to replace the banknote of the same value. The two-dollar coin, also replacing a banknote, was introduced in 1988. These have content of 2% nickel, 6% aluminium and 92% copper. Thus, all Australian coins in use currently are composed of more than half copper. The two-dollar coin is smaller in diameter than the one-dollar coin, but the two-dollar is slightly thicker. The one- and two-cent coins were discontinued in 1991