All coins are genuine Royal Australian Mint issued coins. Since opening in 1965, the Royal Australian Mint has produced over 15 billion coins. Circulating Coins - These are mass-produced coins, used for everyday cash transactions. Made from base metals such as copper, nickel and aluminium, they are struck at the rate of up to 650 per minute. While they ordinarily feature reverse designs of Australian fauna (or an Aboriginal elder on the two dollar coin), many commemorative coins are released to mark events, people or organisations which have had a significant impact on Australian society. Collector Coins - These products are legal tender in Australia, but are produced to be used as gifts or souvenirs, or as pieces for collections. To meet the needs of different interests or budgets, these pieces are produced in a range of different finishes, and feature a broad range of themes.