5 Dollars - Elizabeth II 4th Portrait - Aurora Australis - Silver Proof

The Aurora Australis coin was part of the Royal Australian Mint's broader push in the late 2000s to exploit holographic technology on collector issues — the hologram here is integral to the design concept rather than decorative afterthought, intended to simulate the shifting luminescence of the southern lights. The phenomenon itself results from solar wind particles colliding with atmospheric gases at high altitude, producing the curtain-like light displays most visible from Tasmania and the Antarctic coast.

Mintage was capped at 7,500 pieces worldwide.