The 1 oz Kangaroo gold coin is one of the most popular gold bullion produced by Australia’s Perth Mint. Having once been the Australian Gold Nugget, this coin was changed in 1989 to include a Kangaroo, which made it closer in line with other gold coins produced in Perth. Australian Gold Kangaroo coins always feature a new image of one of the four kangaroo species that inhabit the Australian continent. The coin contains. A micro-engraved letter that can only be seen with a microscope adds another layer of security for any investor’s peace of mind. Gold Kangaroo coins are highly sought after for their investment grade gold and collectability.