One of the world's largest coins at 220 mms (about 11 inches) in diameter, and weighing 10 kilos. Each coin takes 2 or 3 days to produce, as currently they are not die-struck, but milled using the cutting tools normally used to create the steel dies. Because of this, each coin may show some slight variation. The surface finish is not as high as might normally be expected, especially from the Perth Mint, whose production is usually superb. One coins receives individual finishing.