The koala is one of Australia's most popular animals, accounting for the exceptional success of the Australian Koala series that began in 2007. Each year features a new design, adding collectibility to the .999 fine Silver content. This year's issue has a limited mintage of only 300,000 coins, making them much more collectible as a bullion. Each year the image changes, but the motif remains focused on the nation’s beloved koala. This makes the Australian Silver Koala one of the most collectible bullion series.