The Australian half ounce silver piece (abbreviated as 1/2 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 silver half-ounce coin by the Perth Mint is intended as a gift on the occasion of a newborn baby.
The Mint says about it:
"The untold joy at the arrival of a newborn is worthy of a timeless gift. Whether it’s presented to the doting parents or given to the baby to treasure through life, this lovely coin represents a fitting way to celebrate.
This adorable silver coin is a unique and thoughtful gift for newborns, whether boy or girl, with a depiction of a stork and a beautiful baby resting in a blanket. The myth of the stork carrying a bundled baby in its beak has an unconfirmed origin but is popular throughout the world, appearing in European, American, North African and Middle Eastern folklore." | 
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