The Australian one ounce silver piece (abbreviated as 1 oz and designated with Ag for "silver") is a bullion and commemorative coin format. Uniquely, in Australia there are two mints authorised to strike legal tender: the Royal Australian Mint (which also makes the country's circulating coinage) and the Perth Mint which only makes collector and bullion coins, as well as other bullion products.
The Australian Silver Kangaroo coin range was introduced in 1993 by the Royal Australian Mint; subsequently, the Perth Mint also started issuing Kangaroo bullion coins. The coins have legal tender status in Australia and are one of few legal tender bullion silver coins to change their design every year. This and their limited annual mintage may, unlike for many other bullion coins, raise their numismatic value over the value of silver used.
This coin is part of the long-running Australian Kangaroo bullion coin series by the Perth Mint, and is a "numismatic" issue with a one-year design.
The Mint says about it:
The ultimate symbol of Australia, the kangaroo's connection to the sunburnt country is deeply rooted within its red earth. Evolving with the continent across tens of millions of years, the forest-dwelling creatures transformed into their most familiar incarnation about three million years ago when they ventured out into the expanding grasslands.
This gilded silver coin highlights Australia’s native marsupial in 24-carat gold. Depicting an adult kangaroo crouched in front of a rural landscape, framed by stylised trees under the Australian sun, the limited edition release is a wonderful tribute to the fascinating creatures. | 
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