? 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London in 1966 to assist with the huge demand for new currency as a result of the vast amount of pre-decimal currency withdrawn. ...
?Image from: Heritage Auctions . Victoria gold 1/2 Sovereign 1844 MS66 NGC. '2017 January 8 - 9 NYINC World Coins Signature Auction - New York #3051'. Retrieved from https://coins.ha.com/itm/great-britain/great-britain-victoria-gold-1-2-sovereign-1844-ms66-ngc-/a/3051-32195.s?type=NGC3051
? This commemorative ten dollar coin is one piece from an 8 coin set known as the State Series. They were released on an annual basis between the years of 1985-1993, excluding the year 1988. Each coin commemorates a different Australian State or Territory and bears the Coat of Arms of each one. This coin pays tribute to the Northern Territory which was the seventh in the series and was issued in 1992. It was joined by Victoria, South Australia, New South Wales, Queensland, Western Australia, ...
? This is the first silver proof coin from a commemorative set called the Australian Landmark series and it celebrates the Sydney Opera House. The series was released in three stages with 6 coins altogether released in pairs according to three themes between the years of 1997-1999. The three themes were Sydney, Melbourne and the Snowy Mountains. This particular coin is of course taken from the Sydney theme issued in 1997, in which it was paired with a coin commemorating Sydney ...
? The Type III twenty cent piece was put into circulation in 1999 and continues to be regularly issued today. It features the new Ian Rank-Broadly portrait of HM Queen Elizabeth II on the obverse with the same Stuart Devlin platypus design on the reverse . Devlin's initials can be found within a wave to the left of the platypus' foot and Rank-Broadly's initials are located below the the obverse portrait. A number of additional striketypes were issued along ...