The Perth Mint has unveiled the world's largest and most valuable gold coin.
Weighing in at just over one tonne, the 99.99 per cent pure gold coin has been valued at more than $50 million.
A team of a dozen people have worked since late last year to create the coin which measures 80 centimetres wide and 12 centimetres deep, featuring a kangaroo on one side and the Queen's motif on the other.
Mint chief executive Ed Harbuz says the idea was to make it the biggest and best in the world.
"The largest coin in the world up to now has been 100 kilograms, made by a competitor mint, and we thought well, we'd better make it so much bigger that it'll stay the biggest coin in the world for a long time," he said.
"To cast and handcraft a coin of this size and weight was an incredible challenge - one which few other mints would even consider."
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