? In 1951 the Perth and Melbourne Mints produced 29,422,000 Half Penny pieces. In the same year the Royal Mint in London produced 6,960,000 pennies. The London variety can be distinguished by a 'PL' mint-mark and the Perth Mint variety can be be distinguished by a dot mint-mark located in the same spot. The Melbourne variety is notably more scarce than the Perth variety although it is still quite affordable until around MS64. London 'PL' mint-mark on the reverse of a 1951-PL ...
? 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 ...
? Struck along side the Perth mint half penny and penny, and the threepence, the 1964 penny is the last pre-decimal coin to be struck in Australia. With 10 million pieces struck to serve just two years of circulation, numerous unused bank rolls of 1964 pennies have surfaced making the coin very common in mint state . Sourcing the date with full mint brilliance can be quite easy although the date does pose quite a challenge if desired in MS65 and is very rare in MS66.
? First sighted in the Heyde Sale in 1974, the 1864 Sydney Mint half sovereign featuring a Roman I in the date in place of the typical Arabic 1 is one of the scarcer errors of the series. While scarcer than the 1858 half sovereign with the incorrect legend, it has not nearly received the same attention and thus remains in a similar price range to the ordinary type for the date. It was most likely caused during the re-punching of the letters, a technique employed by the Sydney mint ...
? The Type I twenty cent was issued from 1966 to 1984 with an additional proof striking in silver in 2006 as part of the 40th anniversary of decimal coinage set. It features a platypus on the reverse and her majesty Queen Elizabeth II on the obverse .The issue was struck at the Royal Australian Mint in all years with additional assistance provided by the Royal Mint London in 1966 to assist with the huge demand for new currency as a result of the vast amount of pre-decimal currency withdrawn. ...
