All Nugget coins are legal tender in Australia, which is why their front sides carry an image of Queen Elizabeth II, a nominal value and the name of the country of origin.
The reverse side features a kangaroo that is changed every year, the year of issue of the coin as well as the weight and proof of gold.
The design of the larger Nuggets (2 oz, 10 oz and 1 kg) features the Australian red kangaroo and it is not changed each year. Only the year of issue of the coins varies.