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.
Both mints endeavour to create coins with attractive designs, and to introduce new designs and themes often, in order to raise the numismatic value of the coins over the value of previous metal used.
This one-ounce silver proof coin was issued to mark the participation of the Australian Paralympic Team in the summer Paralympic Games in Paris in 2024.
The mint says about it:
Embrace the spirit of the Paris 2024 Paralympic Games with this attractive coloured coin featuring a long jump and track Para-athlete. The Australian Paralympic Team will showcase its extreme skill, endurance and competitive spirit when it competes on the world stage in Paris. Cheer on our Paralympians as they show the world what they’re made of. | 
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