The Perth Mint has been refining gold since 1899 and is Australia's official mint. One of three major mints in Australia, the Perth Mint has outlived the mints in both Sydney and Melbourne. The Perth Mint is currently the only operational mint in Australia. In 1957, the Perth Mint achieved producing a 13 troy ounce gold bar containing .999999 pure gold! This caught the attention of the Royal Mint and soon became the benchmark for much gold refining today.