Australia's platinum koala series launched in 1988, making Perth one of the earliest sovereign mints to issue a dedicated platinum bullion program. The fractional denominations were added to compete directly with the Canadian Maple Leaf platinum issues, which had established the benchmark for investor-grade platinum coinage in the late 1980s. Perth's .9995 fineness specification was chosen specifically to exceed the Maple Leaf's .9999 floor — a deliberate commercial decision that backfired when the market standardized upward and Perth later revised its own standard.
Australia's platinum koala series launched in 1988, making Perth one of the earliest sovereign mints to issue a dedicated platinum bullion program. The fractional denominations were added to compete directly with the Canadian Maple Leaf platinum issues, which had established the benchmark for investor-grade platinum coinage in the late 1980s. Perth's .9995 fineness specification was chosen specifically to exceed the Maple Leaf's .9999 floor — a deliberate commercial decision that backfired when the market standardized upward and Perth later revised its own standard.