15 Dollars - Elizabeth II 4th Portrait - Koala - Platinum Bullion Coin

Australia's platinum koala series, launched in 1988, was among the first government-issued platinum bullion programs in the world — preceding most competitors by years. The Perth Mint has always produced these in fractional sizes to compete directly with the Canadian Maple Leaf platinum issues, with the 1/10 oz denomination targeting investors who want platinum exposure at a lower per-unit price point. The "pad printed" composition notation here is a cataloging artifact, not a manufacturing detail — almost certainly a data entry anomaly in the reference database.