50 Dollars - Elizabeth II 4th Portrait - Golden Wattle - Platinum Proof

The 2007 Golden Wattle platinum issue was part of Perth Mint's broader push into pad-printed coinage — a technique borrowed from industrial manufacturing that allows photographic-quality color application directly onto a metal surface without the structural limitations of enamel inlay. Perth was among the first sovereign-affiliated mints to apply this process at proof standard. The wattle series itself was timed around Australia's national floral emblem gaining renewed legislative recognition in the 1990s following the formal designation under the Floral Emblem of Australia Act 1988.

Platinum at this weight tier — just under half a troy ounce — was an unusual commercial choice in 2007, positioned above gold-coin price points in a year when platinum spot briefly exceeded $1,300 USD per ounce.