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 a high relief, coloured version of the one-year design of the Australian Kangaroo for 2023. It is struck on a thicker flan which has a smaller diameter than the regular one-ounce silver coins.
The mint says about it:
The Perth Mint’s signature coin series portrays annual designs of our most emblematic animal. Tens of millions of these fascinating marsupials known for their pouches and bounding motion live and breed in vast swathes of Australian desert, forest, and bushland habitats.
The coin’s prominent kangaroo motif is meticulously coloured in orange-brown hues typical of the species found in the Red Centre. Other coloured elements include eucalyptus and grass trees which contribute to the unique outback flavour of this iconic collectable. | 
Search for Australia: Silver Ounce 2023 Australian Kangaroo, High Relief on eBay 