The coins had the same sizes and compositions as the corresponding Australian coins, with the 50 cents matching the cupronickel dodecagonal type introduced in Australia in 1969.
The cent coins were all the same sizes, weights, and compositions as the corresponding Australian coins, with the 1 dollar an equilaterally curved heptagonal (seven sided) coin minted in cupro-nickel.
He rose to fame when, in 1964, he won a competition to design the first decimal coinage for Australia.
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