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
Dollar coin (United States) of most other developed countries, where denominations of similar value exist only in coin. These coins have largely succeeded because of a removal (or lack) of their corresponding paper issues, whereas the United States government has taken no action to remove the one-dollar bill. The United States Government Accountability Office (GAO) has stated that discontinuing the dollar bill in favor of the dollar coin would save the U.S. government approximately $5.5 billion over thirty years primarily through seigniorage. The Federal Reserve has refused to order the coin from the mint for distribution citing a lack of demand, according to ex-Mint