The Platinum Koala is an Australian platinum bullion coin minted by the Perth Mint and is the most famous series of platinumcoins of Australia. The Platinum Koala is notionallylegal tender, that is a legal means of payment. On 18 June 1987, the Australian Government approved the minting of platinum and silver coins. This decision was made based on the success of gold coins issued a year earlier. The minting of the coin began in September 1988 in Perth. For marketing purposes, 2 ounce, 10 ounce and 1 kilogram coins of silver, gold and platinum were introduced in 1991; the 1 kg coins were the world's heaviest bullion coins at the time. Together with the American Platinum Eagle, the Platinum Koala is one of the very few series of platinum coins which are still being produced. Minting of 1/10 and 1/2 oz 2010 coins has been announced and will not exceed 2,500 and 1000 pieces, respectively. However, it will be enriched with the new 1/10 and 1/2 oz animal-related platinum coins depicting platypus, frill-necked lizard, saltwater crocodile, wombat, echidna, brolga, dolphin and kangaroo. All these coins have coloured backgrounds. The obverse depicts the Queen of Australia, Elizabeth II, and the reverse contains an image of a koala. The initials JB of the reverse face designerJames Brown are present on most coins. Other designers of the coin include Raphael Maklouf, Miranda Cornell and Darryl Bellotti. The annual series contain coins weighing from 1/20 ounce to 1 kilogram. The Platinum Koala never reached the popularity of the AmericanPlatinum Eagle, mostly because it has not been advertised in the US. Like most investment platinum coins, Platinum Koalas are sealed in a protective plastic case. The coins are sold at prices that reflect the current price of platinum, and not at the face value printed on the coin. Since November 1986, Perth Mint has used more than 18 tonnes of platinum for minting. About 85% of them were sold abroad making the Gold Corporation one of Australia's top 30 export earners.
