25 Dollars - Elizabeth II 6th Portrait - Australian Nugget - Gold Proof Coin

The Australian Nugget series, launched in 1986, was Perth Mint's direct answer to the Krugerrand's dominance in the bullion market — but where the South African coin targeted investors, Perth increasingly tilted toward collector proof issues like this one. The sixth portrait of Elizabeth II, by Jody Clark, was adopted by Australia later than most Commonwealth mints, phased in from 2019 onward.

The kangaroo reverse design changes annually, a deliberate policy decision made to stimulate repeat buying among collectors and prevent secondary-market arbitrage on specific dates.