100 Dollars - Elizabeth II 4th Portrait - Kangaroo - Gold Proof High Relief

Perth Mint's high-relief gold proof program gained serious traction in the 2010s as competition from the Royal Canadian Mint's high-relief issues pushed Australian producers to refine their own relief-depth and polishing techniques. The 2016 kangaroo issue required multiple strikes under considerably higher pressure than standard proof production, a process that demands individually hand-fed planchets and accounts for the low mintage relative to the standard proof kangaroo series.

KM# 2445 falls under the fourth portrait of Elizabeth II by Ian Rank-Broadley, adopted by Australia in 1999.