Slang terms for money for "saucepan lid/quid". The five-pound note could be referred to as a "fiver", or its derivatives, "deep sea diver" and "sky diver". A number of post-decimal denominations which have since been discontinued had their own nicknames. The two-dollar note was known as the "sick sheep" in reference to its green colour and the merino ram that it showed. The paper (first and second series) hundred-dollar note was nicknamed the "grey ghost", or the "Bradman" in recognition of its proximity to the 99.94 batting average of cricketer Donald Bradman. In Canada, the one-dollar coin is known as the "loonie". This 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