? In 1916 the Calcutta mint produced half pennies for Australia as neither the Sydney, Melbourne nor Perth mints were prepared to produce bronze coins. A very small number of 1916 half pennies were mistakenly struck with the obverse of an Indian one quarter anna though this was not discovered until June 1965 when Cecil Poole found one in Adelaide. The type of error is called a mule. The half penny mule can be identified by the lack of pearls in the crown of George V and an Elephant on the shoulder ...
?Image from: A.H. Baldwin & Sons Ltd . Rare Victoria 1847 Sovereign with 1 Over Inverted 1 in Date. 'Auction 79 8 May 2013'. Retrieved from https://www.numisbids.com/n.php?p=lot&sid=452&lot=980
? The 2011 Air Series is The Royal Australian Mint's third series dedicated to native Australian fauna, following the popular Ocean and Land Series . The Air Series encompasses six, uncirculated coins, each depicting different winged fauna on the reverse: a Crimson Rosella, Kookaburra, Major Mitchell Cockatoo, Sacred Kingfisher, Cairns Birdwing Butterfly, and Grey-Headed Flying Fox. The series was periodically released in pairs throughout the year in specially designed cards. ...
? The dodecagonal type I fifty cent was issued to replace the round 1966 fifty cent from 1969 to 1984 with a number of patterns dated 1966 and 1967. It is struck on a dodecagonal planchet with the Arnold Machin portrait of HM Queen Elizabeth II on the obverse , and Stuart Devlin's interpretation of the Australian coat of arms on the reverse . Devlin's initials can be found on the bottom of the reverse underneath the denomination. The type was struck exclusively at the Royal Australian ...
? The 1920 is generally considered to be a slightly scarcer than average coin, especially if sought in mint state. While it is certainly scarcer than the 1919 and 1921, its scarcity is somewhat overrated with at least one Sydney mint roll surfacing allowing for numerous mint state examples being available. Like the 1919, the 1920 often suffers from a central strike weakness but to a much greater extent, occasionally being struck with only 6 clear pearls. One should be cautious however, and ...