100 Dollars - Elizabeth II 4th Portrait - Kangaroo - Gold Bullion Coin

The Perth Mint's four-nines gold bullion series occupies a specific commercial niche: investment-grade product competing directly against the Royal Canadian Mint's Maple Leaf and South Africa's Krugerrand, both of which had decades of market penetration before Australia entered the field seriously in the late 1980s. The kangaroo design rotates annually — a deliberate anti-counterfeiting measure that also forces secondary-market buyers to track individual years rather than treat the series as interchangeable product.

KM#2077 covers the span during which Ian Rank-Broadley's effigy was still current before Jody Clark's portrait was adopted for Australian coinage.