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 coin with a face value of $1 was issued as part of the coin series celebrating world-famous Australian rock group AC/DC.
AC/DC are an Australian rock band formed in Sydney in 1973 by Scottish-born brothers Malcolm and Angus Young. Although their music has been variously described as hard rock, blues rock, and heavy metal, the band themselves call it simply "rock and roll". The band's line-up varied throughout the years; it did not disband though, and issued its latest album in 2020, 47 years after it was founded.
The Mint says:
"Six AC/DC albums are clocking up major milestone anniversaries in 2020 and 2021.
To celebrate, the Royal Australian Mint brings you a unique, electrifying silver coin. The coin design shoots to thrill and features the iconic parrot from the Dirty Deeds Done Dirt Cheap cover, the trademark cannon from For Those About to Rock (We Salute You) and many other features inspired by original AC/DC art." | 
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