Perth Mint 10g Gold Kangaroo Bars This item is in the category Coins\Bullion\Gold\Bars. Perth Mint, Brand new Kangaroo 5 gram gold bullion bar only. 5 g gold bullion bar. perth mint kangaroo minted 99.99% investment grade the perth mint tamper-evident case. That dimensions listed represent the bar's maximum possible rim thickness, length, and width as per our manufacturing tolerances.