These 99.99% bullion bars are offered in a convenient choice of weights and are stamped with The Perth Mint’s London bullion Market Association registered mark, a symbol of international tradability. The 1g gold bullion minted bar is one of eight sizes, all with The Perth Mint’s internationally recognised’swan’ logo on the front and stylised kangaroo motifs on the back. Minimum Gross Weight (g). Gold Content (Troy oz). 15.60 x 9.10.