The twenty cent coin was first introduced with decimal currency on 14 February 1966. The original reverse design of a platypus remained unchanged until 1995. This denomination has since been used for commemorative designs.
All twenty cent coins in the first issue in 1966 were produced at the Royal Mint, London. The Royal Australian Mint did not commence twenty cent coin production until the next financial year. Quantities of twenty cents have also been struck by the Royal Mint, Llantrisant and the Royal Canadian Mint.
Nominal specifications
|
Composition |
Shape |
Edge |
Mass |
Diameter |
|---|---|---|---|---|
|
75% Copper - 25% Nickel |
Circular |
Milled |
11.3 grams |
28.65 millimetres |
Mintage Figures
|
Reverse Design |
Design Details |
Year |
Mintage |
Mint* |
|---|---|---|---|---|
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
1966 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1981 1981 1982 1983 1984 1985 |
30.0 28.2 83.8 40.5 16.5 23.7 8.9 16.6 23.4 33.5 53.3 59.8 41.3 37.4 22.3 84.4 65.5 50.0 50.0 76.6 55.1 27.8 2.7 |
RML RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RAM RMLL RCM RAM RAM RAM RAM |
|
No twenty cent coins were produced in 1986 or 1987 |
||||
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
1988 |
0.2 |
RAM |
|
No twenty cent coins were produced in 1989 - 1993 |
||||
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
1994 |
14.3 |
RAM |
|
|
Celebrating the 50th anniversary of the United Nations |
1995 |
4.8 |
RAM |
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
1996 1997 1998 1999 2000 2001 |
20.6 16.7 28.8 64.2 35.6 82.0 |
RAM RAM RAM RAM RAM RAM |
|
|
Celebrating the life and achievements of Sir Donald Bradman |
2001 |
10.0 |
RAM |
|
|
Centenary of Federation Student Design winner for the Australian Capital Territory, Stacy Jo-Ann Paine of Caroline Chisholm High School |
2001 |
2.1 |
RAM |
|
|
Centenary of Federation Student Design winner for New South Wales, Joseph Neve of Bellingen High School |
2001 |
3.2 |
RAM
|
|
|
Centenary of Federation Student Design winner for Norfolk Island, Megan Cummings of Norfolk Island Central School |
2001 |
2.2 |
RAM |
|
|
Centenary of Federation Student Design winner for Northern Territory, Lisa Brett of Leanyer School |
2001 |
2.1 |
RAM |
|
|
Centenary of Federation Student Design winner for Queensland, Jenifer Gray of Ingham State High School |
2001 |
2.3 |
RAM |
|
|
Centenary of Federation Student Design winner for South Australia, Lisa Murphy of Yankalilla Area School |
2001 |
2.4 |
RAM |
|
|
Centenary of Federation Student Design winner for Tasmania, Abbey MacDonald of Launceston Church Grammar School |
2001 |
2.2 |
RAM |
|
|
Centenary of Federation Student Design winners for Victoria, Ryan Douglas Ladd and Mark Aaron Kennedy of Lara Lake Primary School |
2001 |
2.9 |
RAM |
|
|
Centenary of Federation Student Design winner for Western Australia, Janice Ng of Forrestfield Senior High School |
2001 |
2.4 |
RAM |
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
2002 |
27.2 |
RAM |
|
|
Commemorating Australia’s volunteers |
2003 |
7.6 |
RAM |
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
2004 2005 |
72.1 58.6 |
RAM RAM |
|
|
Commemorating the 60th anniversary of the end of World War 2. Inspired by a photograph in the Australian War Memorial collection of a soldier returning home to his family |
2005 |
33.5 |
RAM |
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
2006 2007 2008 2009 2010 |
102.3 42.7 132.9 43.6 59.9 |
RAM RAM RAM RAM RAM |
|
|
Commemorating the Centenary of Australian Taxation Office |
2010 |
11.6 |
RAM |
|
|
Commemorating International Women’s Day |
2011 |
6.8 |
RAM |
|
|
Commemorating the Royal Wedding of Prince William and Catherine Middleton |
2011 |
10.1 |
RAM |
|
|
Commemorating International Year of Volunteers |
2011 |
6.1 |
RAM |
 |
An impression of a platypus designed and sculpted by Stuart Devlin |
2011 2012 |
15.1 34.6 |
RAM RAM |
|
|
Commemorating the Centenary of Canberra |
2013 |
6.2 |
RAM |
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
2013 2014 2015 2016 |
43.9 55.91 24.4 34.4 |
RAM RAM RAM RAM |
|
|
2016 obverse design to celebrate the 50th anniversary of decimal currency |
2016 |
4.5 |
RAM |
|
|
An impression of a platypus designed and sculpted by Stuart Devlin |
2017 2018 2019 (IRB) 2019 (JC) 2020 2021 2022 |
29.8 22.2 26.6 2.0 33.5 38.4 72.94 |
RAM RAM RAM RAM RAM RAM RAM |
Notes for using these tables:
These are current mintages where the numbers have been published in an Annual Report. Items marked not available will be updated when they pass the Annual Report and issue test.
*RAM = Royal Australian Mint; RCM = Royal Canadian Mint; RML = Royal Mint, London; RMLL=Royal Mint, Llantrisant
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