Australian one dollar coin - Wikipedia Australian one dollar coin One Dollar Australia Value 1.00 AUD Mass 9.00 g Diameter 25.00 mm Thickness 3.00 mm Edge interrupted milled 0.25 mm 77 notches Composition 92 % Copper, 6 % Aluminium, 2 % Nickel Years of minting 1984 -- present Catalog number -- Obverse Design Elizabeth II, Queen of Australia Designer Ian Rank - Broadley Design date 1999 Reverse Design Five kangaroos Designer Stuart Devlin Design date The Australian one - dollar coin is the second-most - valuable circulation denomination coin of the Australian dollar after the two - dollar coin ; there are also non-circulating legal - tender coins of higher denominations ( five -, ten -, two - hundred - dollar coins and the one - million - dollar coin ). It was first issued on 14 May 1984 to replace the one - dollar note which was then in circulation, although plans to introduce a dollar coin had existed since the 1970s. The first year of minting saw 186.3 million of the coins produced at the Royal Australian Mint in Canberra. Three portraits of Queen Elizabeth II have featured on the obverse, the 1984 head of Queen Elizabeth II by Arnold Machin ; between 1985 and 1998 the head by Raphael Maklouf ; and since 1999 the head by Ian Rank - Broadley. The coin features an inscription on its obverse of AUSTRALIA on the right - hand side and ELIZABETH II on the left - hand side. The reverse features five kangaroos. The image was designed by Stuart Devlin, who designed Australia 's first decimal coins in 1966. Contents 1 Commemorative issue 2 See also 3 References 4 External links Commemorative issue Main article : Australian commemorative coins The Royal Australian Mint has released a number of commemorative issued coins since the Australian $1 was released in 1984, some of which were not released into circulation. Year Subject Mintage 1986 International Year of Peace 25,200,000 Commemoration the Australian Bicentennial 21,600,000 Landcare Australia 18,200,000 Sir Henry Parkes 26,200,000 Birth of Sir Charles Kingsford - Smith 24,400,000 1999 International Year of Older Persons 29,300,000 Centenary of Federation 27,900,000 International Year of Volunteers 6,000,000 2002 Year of the Outback 35,400,000 2003 Australia 's Volunteers 4,100,000 Centenary of Women 's Suffrage 10,000,000 2005 60th Anniversary of the End of World War 2 34,200,000 2007 Australia 's hosting of the Asia - Pacific Economic Cooperation Forum 20,100,000 2008 Centenary of Scouting in Australia 17,200,000 2009 100th Year of the Age Pension 21,300,000 Centenary of Girl Guiding in Australia 12,600,000 2011 Commonwealth Heads of Government Meeting 9,400,000 2014 - 2018 Centenary of ANZAC 2014 - 2018 21,800,000 ( 2014 ) 1,300,000 ( 2015 ) 1,800,000 * ( 2016 ) 2016 50th Anniversary of Decimal Currency 300,000 * `` * '' denotes partial numbers for 2016 - total production to be confirmed References : See also Coins of the Australian dollar References Jump up ^ `` $200 Gold coin ''. Jump up ^ `` $1 million coin minted ''. smh.com.au. 2011 - 10 - 28. Retrieved 2016 - 11 - 18. ^ Jump up to : `` One dollar ''. Royal Australian Mint. 1984 - 05 - 14. Retrieved 2016 - 11 - 28. Jump up ^ `` One Dollar ''. Royal Australian Mint. 8 January 2016. Retrieved 29 September 2017. Ian W. Pitt, ed. ( 2000 ). Renniks Australian Coin and Banknote Values ( 19th ed. ). Chippendale, NSW : Renniks Publications. ISBN 0 - 9585574 - 4 - 6. External links Australian Decimal Currency The Australian Dollar Coin Australian Coins : Type Collecting Pictures of Australian Coins Preceded by One Dollar Note ( Australian ) One Dollar ( Australian ) 1984 -- present Succeeded by Present Australian currency Decimal coins 1c 2c 5c 10c 20c 50c ( round ) $1 $2 Coins of the $ Commemorative coins Decimal notes $1 $2 $5 $10 $20 $50 $100 Banknotes of the $ Pre-decimal coins ​ ⁄ d 1d 3d 6d 1s 2s 5s Pre - £ coins Coins of the £ Pre-decimal notes 5s 10s £ 1 £ 5 £ 10 £ 20 £ 50 £ 100 £ 1000 Mints Sydney Mint ( 1855 -- 1926 ) Melbourne Mint ( 1872 -- 1967 ) Perth Mint ( 1899 -- ) Royal Australian Mint ( 1965 -- ) Topics Australian dollar Australian pound ( obsolete ) Banknotes of the Australian pound ( obsolete ) Note Printing Australia Pound sterling ( obsolete ) Reserve Bank of Australia Retrieved from `` https://en.wikipedia.org/w/index.php?title=Australian_one_dollar_coin&oldid=840407075 '' Categories : Currency introduced in 1984 Decimal coins of Australia One - base - unit coins Hidden categories : Use dmy dates from December 2013 Use Australian English from December 2013 All Wikipedia articles written in Australian English Coin article with no obverse image Talk Contents About Wikipedia Bahasa Indonesia 日本 語 پنجابی Русский Edit links This page was last edited on 9 May 2018, at 17 : 49. About Wikipedia

Question: when was the dollar coin introduced in australia
Answer: 14 May 1984