200 Dollars - Elizabeth II 4th Portrait - Koala - Gold Bullion Coin

Australia's gold koala bullion series launched in 1980 under the Australian Nugget branding before being reoriented toward the koala theme in the late 1980s, with the Perth Mint taking full operational control as it expanded its bullion program to compete directly with the Krugerrand and Maple Leaf in the international market. The two-troy-ounce denomination occupies an awkward commercial niche — too large for most retail bullion buyers, it was aimed squarely at institutional and high-net-worth collectors who preferred fewer, heavier pieces over multiples of the standard one-ounce.

The koala design changes annually, which the Perth Mint established as policy specifically to encourage year-on-year collector demand rather than purely weight-based trading.