50 Cents - Elizabeth II 4th Portrait - Bush Babies - Kangaroo

The "Bush Babies" series was one of the Perth Mint's earlier experiments with pad printing on bullion-adjacent collector issues — a technique borrowed from industrial manufacturing that allows photorealistic color detail on struck silver without the enamel work traditional to enameled coins. The process deposits ink in layers directly onto the recessed field, and early runs in the series had documented adhesion inconsistencies that collectors should examine on unslabbed examples.