The Australian two ounces gold piece (abbreviated as 2 oz and designated with Au for "gold") is a bullion coin format. Uniquely, in Australia there are two mints independently authorised to strike legal tender: the Royal Australian Mint (which also makes the country's circulating coinage) and the Perth Mint which only makes collector and bullion coins, as well as other bullion products.
The Perth Mint comes issues its Australian Koala series in many formats, with the high-value gold coin considered "numismatic" issues. The reverse design changes every year, always featuring a koala - one of the most famous and distinctive animals native to Australia.
The gold two-ounce coins have a face value of 200 dollars, but this is only symbolic - as the bullion value of their precious metal content is much higher. The overall weight is slightly more than two ounces, so that the pure gold content is exactly 2.000 AGW (two troy ounces Absolute Gold Weight). | 
