1988 $50 First Proof Issue. 1/2oz Platinum. Australian Koala.

The 1988 $50 1/2oz platinum-proof coin marks the first proof issue featuring the Australian Koala. Struck in pure platinum, this coin features a detailed image of a koala in its natural habitat. The proof finish ensures a sharp contrast between the frosted and mirrored surfaces, highlighting the intricate details of the design.