In 2012 to celebrate the Koala, the Perth Mint released a very Limited Issue High Relief Koala $1 One Dollar Silver Proof Coin struck in solid fine .999 Silver weighing one ounce of pure Silver.
The reverse design depicts the Koala ones of Australia‘s cuddliest marsupials while the obverse features Ian Rank Broadley's portrait of Her Majesty Queen Elizabeth II.
These legal tender coins have been struck to proof quality using specially prepared dies and highly polished blanks.