These 1 kilogram Perth Mint silver bars are cast, not minted.
The bars have a rough cast design, which is achieved by pouring liquid silver into a mould and then imprinting the bar's information on the top once it has cooled. The top of each bar features the Perth Mint logo, with the words 'The Perth Mint' and 'Australia' written around an image of a swan. The bottom of each bar features its weight of 1 kilogram, and its purity of 999. These bars do not come with a serial number stamped on them.
The reverse of the bar has been left bare. Perth Mint silver bars are available in a range of sizes, including 1 Ounce, 10 Ounce, 1 Kilogram and 100 Ounce silver bars.
About the Perth Mint
The Perth Mint is Australia's official mint, and is responsible for manufacturing all Australian coins in addition to its wide range of precious metals products. The mint manufactures bullion bars in both silver and gold. The mint also releases a wide range of bullion coins annually. These include the Kangaroo series, which is available in gold, silver, and platinum, and the Lunar series, which is released in gold and silver. The Koala and Kookaburra coins, which are equally popular, are available in silver in sizes ranging from 1/2 ounce up to 1 kilogram.