50 Dollars - Elizabeth II 4th Portrait - Emu, Gold Bullion Coin

Australia's emu bullion series occupies an unusual niche: unlike the Kangaroo series, which runs continuously, individual emu issues were produced in limited annual runs with no guarantee of continuation, making any given year's mintage a genuine question mark at time of purchase. The 2011 issue was produced under the Perth Mint's standard one-troy-ounce fractional program, with the half-ounce denomination historically seeing lower collector uptake than the full ounce — a dynamic that can cut both ways for long-term availability.