2012 50c Australian Sea Life II The Reef Octopus 1/2oz Silver Coloured Proof Coin Gold - 1/4oz Proof Dame Joan effortlessly reigned over

Dame Joan effortlessly reigned over many international stages during her 40 year career

The coin is completely plated in Black Ruthenium and selectively in Gold

symbolising all the nations and territories competing in the Games

Named after the local Aboriginal Yugambeh word for “koala”

Quintana the quizzical Quokka and her quietest quadruplet

2012 50c Australian Sea Life II The Reef Octopus 1/2oz Silver Coloured Proof Coin Gold - 1/4oz Proof Dame Joan effortlessly reigned overThe coins reverse depicts an octopus in colour and includes The Perth Mints P mintmark. Incorporated into the design are the inscriptions AUSTRALIAN SEA LIFE II THE REEF and OCTOPUS. The octopus can be found all around the coast of Australia. The octopus is among the most intelligent of all invertebrates and if threatened will hide, flee, expel ink, or use colour changing camouflage.