Twenty Cents, Coin Type from Australia - detailed information

Twenty Cents, Coin Type from Australia (issued 1966 - )
Coin TypeTwenty Cents

The 20 cent coin was first introduced with decimalisation on 14 February 1966. Given that the earlier Australian Pound was equal to 240 pence, and the new Australian Dollar was introduced at two dollars to the pound, the twenty cents denomination was exactly equal to the earlier Australian Florin - both in value and in size (the coins were made of the same dimensions and mass). It is thus a direct descendant of the British Florin.

The original reverse design by Stuart Devlin has not been changed since the introduction. This denomination has since been used infrequently for commemorative designs too.

All of the first issue of 20 cent coins in 1966 was produced at the Royal Mint, London. The Royal Australian Mint did not commence 20 cent coin production until the next financial year (striking coins dated 1966, as listed on its web site). Quantities of 20 cents have also been struck later by the Royal Mint, Llantrisant and the Royal Canadian Mint.

Composition: 75% copper, 25% nickel.

Obverse

Australian decimal coins have carried four portraits of Her Majesty Queen Elizabeth the Second.

The inclusion of an effigy of the Queen on the obverse of Australia's coinage is mandated by Regulation 4 (c) of the Currency Regulations made under the Currency Act 1965. Portraits of Her Majesty have all faced to the right in line with a convention, said to have commenced with Charles II (1660-1685), that the new Monarch's portrait would face in a direction opposite to that of their predecessor.

Obverse InscriptionLegend of the ruling monarch, date
Reverse

A platypus swimming. The denomination numeral 20 [cents] is above the head of the mammal; the artist's initials SD (for Stuart Devlin) are in (very) tiny letters, within the swirl of water around its right forepaw.

Reverse Inscription20
EdgeMilled
Edge InscriptionNone
Notes

If you keep your coins in 2x2 cardboard holders, the best size for twenty cent coins is 30mm.

All Coins of Type: Twenty Cents (74)
Coin NameReverseObverseDetails
Twenty Cents 1966 Australia / Twenty Cents 1966 - reverse photo Australia / Twenty Cents 1966 - obverse photo Material: CuproNickel
Mints:
- Royal Mint: 30,000,000
- Royal Australian Mint: 28,241,110
Total Mintage: 58,241,110
Twenty Cents 1967 Australia / Twenty Cents 1967 - reverse photo Australia / Twenty Cents 1967 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 83,848,000
Twenty Cents 1968 Australia / Twenty Cents 1968 - reverse photo Australia / Twenty Cents 1968 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 40,537,000
Twenty Cents 1969 Australia / Twenty Cents 1969 - reverse photo Australia / Twenty Cents 1969 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 16,514,999
Twenty Cents 1970 Australia / Twenty Cents 1970 - reverse photo Australia / Twenty Cents 1970 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 23,286,000
Twenty Cents 1971 Australia / Twenty Cents 1971 - reverse photo Australia / Twenty Cents 1971 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 8,957,000
Twenty Cents 1972 Australia / Twenty Cents 1972 - reverse photo Australia / Twenty Cents 1972 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 16,653,000
Twenty Cents 1973 Australia / Twenty Cents 1973 - reverse photo Australia / Twenty Cents 1973 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 23,366,000
Twenty Cents 1974 Australia / Twenty Cents 1974 - reverse photo Australia / Twenty Cents 1974 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 33,559,000
Twenty Cents 1975 Australia / Twenty Cents 1975 - reverse photo Australia / Twenty Cents 1975 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 53,323,000
Twenty Cents 1976 Australia / Twenty Cents 1976 - reverse photo Australia / Twenty Cents 1976 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 59,795,000
Twenty Cents 1977 Australia / Twenty Cents 1977 - reverse photo Australia / Twenty Cents 1977 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 41,327,000
Twenty Cents 1978 Australia / Twenty Cents 1978 - reverse photo Australia / Twenty Cents 1978 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 37,439,000
Twenty Cents 1979 Australia / Twenty Cents 1979 - reverse photo Australia / Twenty Cents 1979 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 22,336,000
Twenty Cents 1980 Australia / Twenty Cents 1980 - reverse photo Australia / Twenty Cents 1980 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 84,468,000
Twenty Cents 1981 Australia / Twenty Cents 1981 - reverse photo Australia / Twenty Cents 1981 - obverse photo Material: CuproNickel
Mints:
- Royal Australian Mint: 65,589,000
- Royal Mint: 50,000,000
- Royal Canadian Mint: 50,000,000
Total Mintage: 165,589,000
Twenty Cents 1982 Australia / Twenty Cents 1982 - reverse photo Australia / Twenty Cents 1982 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 76,700,000
Twenty Cents 1983 Australia / Twenty Cents 1983 - reverse photo Australia / Twenty Cents 1983 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 55,193,000
Twenty Cents 1984 Australia / Twenty Cents 1984 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 27,881,000
Twenty Cents 1985 Australia / Twenty Cents 1985 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,775,000
Twenty Cents 1986 (mint sets only) Australia / Twenty Cents 1986 (mint sets only) - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 247,000
Twenty Cents 1987 (mint sets only) Australia / Twenty Cents 1987 (mint sets only) - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 270,000
Twenty Cents 1988 (mint sets only) Australia / Twenty Cents 1988 (mint sets only) - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 346,000
Twenty Cents 1989 (mint sets only) Australia / Twenty Cents 1989 (mint sets only) - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 217,000
Twenty Cents 1990 (mint sets only) Australia / Twenty Cents 1990 (mint sets only) - reverse photo Australia / Twenty Cents 1990 (mint sets only) - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 156,000
Twenty Cents 1991 (mint sets only) Australia / Twenty Cents 1991 (mint sets only) - reverse photo Australia / Twenty Cents 1991 (mint sets only) - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 189,000
Twenty Cents 1992 (mint sets only) Australia / Twenty Cents 1992 (mint sets only) - reverse photo Australia / Twenty Cents 1992 (mint sets only) - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 164,000
Twenty Cents 1993 (mint sets only) Australia / Twenty Cents 1993 (mint sets only) - reverse photo Australia / Twenty Cents 1993 (mint sets only) - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 130,000
Twenty Cents 1994 Australia / Twenty Cents 1994 - reverse photo Australia / Twenty Cents 1994 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 14,369,000
Twenty Cents 1995 Platypus (mint sets only) Australia / Twenty Cents 1995 Platypus (mint sets only) - reverse photo Australia / Twenty Cents 1995 Platypus (mint sets only) - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 132,269
Twenty Cents 1995 United Nations Australia / Twenty Cents 1995 United Nations - reverse photo Australia / Twenty Cents 1995 United Nations - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 4,800,000
Twenty Cents 1996 Australia / Twenty Cents 1996 - reverse photo Australia / Twenty Cents 1996 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 20,637,000
Twenty Cents 1997 Australia / Twenty Cents 1997 - reverse photo Australia / Twenty Cents 1997 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 16,762,000
Twenty Cents 1998 Australia / Twenty Cents 1998 - reverse photo Australia / Twenty Cents 1998 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 28,862,000
Twenty Cents 1999 Australia / Twenty Cents 1999 - reverse photo Australia / Twenty Cents 1999 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 64,209,000
Twenty Cents 2000 Australia / Twenty Cents 2000 - reverse photo Australia / Twenty Cents 2000 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 35,619,153
Twenty Cents 2001 Australia / Twenty Cents 2001 - reverse photo Australia / Twenty Cents 2001 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 82,164,896
Twenty Cents 2001 Centenary of Federation - Australian Capital Territory Australia / Twenty Cents 2001 Centenary of Federation - Australian Capital Territory - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - Australian Capital Territory - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,185,539
Twenty Cents 2001 Centenary of Federation - New South Wales Australia / Twenty Cents 2001 Centenary of Federation - New South Wales - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - New South Wales - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 3,264,556
Twenty Cents 2001 Centenary of Federation - Norfolk Island Australia / Twenty Cents 2001 Centenary of Federation - Norfolk Island - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - Norfolk Island - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,270,114
Twenty Cents 2001 Centenary of Federation - Northern Territory Australia / Twenty Cents 2001 Centenary of Federation - Northern Territory - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - Northern Territory - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,163,029
Twenty Cents 2001 Centenary of Federation - Queensland Australia / Twenty Cents 2001 Centenary of Federation - Queensland - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - Queensland - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,383,190
Twenty Cents 2001 Centenary of Federation - South Australia Australia / Twenty Cents 2001 Centenary of Federation - South Australia - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - South Australia - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,464,886
Twenty Cents 2001 Centenary of Federation - Tasmania Australia / Twenty Cents 2001 Centenary of Federation - Tasmania - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - Tasmania - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,262,668
Twenty Cents 2001 Centenary of Federation - Victoria Australia / Twenty Cents 2001 Centenary of Federation - Victoria - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - Victoria - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,983,106
Twenty Cents 2001 Centenary of Federation - Western Australia Australia / Twenty Cents 2001 Centenary of Federation - Western Australia - reverse photo Australia / Twenty Cents 2001 Centenary of Federation - Western Australia - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 2,465,297
Twenty Cents 2001 Donald Bradman Australia / Twenty Cents 2001 Donald Bradman - reverse photo Australia / Twenty Cents 2001 Donald Bradman - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 10,000,000
Twenty Cents 2002 Australia / Twenty Cents 2002 - reverse photo Australia / Twenty Cents 2002 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 27,382,062
Twenty Cents 2003 Volunteers Australia / Twenty Cents 2003 Volunteers - reverse photo Australia / Twenty Cents 2003 Volunteers - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 7,600,000
Twenty Cents 2004 Australia / Twenty Cents 2004 - reverse photo Australia / Twenty Cents 2004 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 72,100,000
Twenty Cents 2005 Australia / Twenty Cents 2005 - reverse photo Australia / Twenty Cents 2005 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 58,600,000
Twenty Cents 2005 60th Anniversary of the End of WW2 Australia / Twenty Cents 2005 60th Anniversary of the End of WW2 - reverse photo Australia / Twenty Cents 2005 60th Anniversary of the End of WW2 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 33,500,000
Twenty Cents 2006 Australia / Twenty Cents 2006 - reverse photo Australia / Twenty Cents 2006 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 102,462,000
Twenty Cents 2007 Australia / Twenty Cents 2007 - reverse photo Australia / Twenty Cents 2007 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 42,712,000
Twenty Cents 2008 Australia / Twenty Cents 2008 - reverse photo Australia / Twenty Cents 2008 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 132,900,000
Twenty Cents 2009 Australia / Twenty Cents 2009 - reverse photo Australia / Twenty Cents 2009 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 43,600,000
Twenty Cents 2010 Australia / Twenty Cents 2010 - reverse photo Australia / Twenty Cents 2010 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 59,900,000
Twenty Cents 2010 ATO Australia / Twenty Cents 2010 ATO - reverse photo Australia / Twenty Cents 2010 ATO - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 11,600,000
Twenty Cents 2011 Australia / Twenty Cents 2011 - reverse photo Australia / Twenty Cents 2011 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 15,100,000
Twenty Cents 2011 International Women's Day Australia / Twenty Cents 2011 International Women's Day - reverse photo Australia / Twenty Cents 2011 International Women's Day - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 6,800,000
Twenty Cents 2011 Royal Wedding Australia / Twenty Cents 2011 Royal Wedding - reverse photo Australia / Twenty Cents 2011 Royal Wedding - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 10,100,000
Twenty Cents 2011 International Year of Volunteers Australia / Twenty Cents 2011 International Year of Volunteers - reverse photo Australia / Twenty Cents 2011 International Year of Volunteers - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 6,100,000
Twenty Cents 2012 Australia / Twenty Cents 2012 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 34,600,000
Twenty Cents 2013 Australia / Twenty Cents 2013 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 43,900,000
Twenty Cents 2013 Centenary of Canberra Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 6,200,000
Twenty Cents 2014 Australia / Twenty Cents 2014 - reverse photo Australia / Twenty Cents 2014 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 52,300,000
Twenty Cents 2015 Australia / Twenty Cents 2015 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 24,400,000
Twenty Cents 2016 Australia / Twenty Cents 2016 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 34,400,000
Twenty Cents 2016 Changeover Australia / Twenty Cents 2016 Changeover - reverse photo Australia / Twenty Cents 2016 Changeover - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: 4,600,661
Twenty Cents 2017 Australia / Twenty Cents 2017 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: unknown
Twenty Cents 2018 Australia / Twenty Cents 2018 - reverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: unknown
Twenty Cents 2019 (Fourth Portrait) Australia / Twenty Cents 2019 (Fourth Portrait) - reverse photo Australia / Twenty Cents 2019 (Fourth Portrait) - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: unknown
Twenty Cents 2019 (Fifth Portrait) Australia / Twenty Cents 2019 (Fifth Portrait) - reverse photo Australia / Twenty Cents 2019 (Fifth Portrait) - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: unknown
Twenty Cents 2020 Australia / Twenty Cents 2020 - reverse photo Australia / Twenty Cents 2020 - obverse photo Material: CuproNickel
Mint: Royal Australian Mint
Mintage: unknown
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Twenty Cents: Details
CountryAustralia
CurrencyAustralian Dollar
Sub-types Twenty Cents Platypus
Twenty Cents Circulating Commemorative
From1966
Face Value20 (x Cent)
CurrentYes
MaterialCuproNickel
Designer
TechnologyMilled (machine-made)
ShapeRound
Size (mm)28.6500
Thickness (mm)2.5200
Mass (g)11.3000
Twenty Cents: Photos
ImageDetails
Specimen Coin - 20 Cents, Australia, 1966
Copyright: Museums Victoria / CC BY
Author:
Source
Specimen Coin - 20 Cents, Australia, 1966
Copyright: Museums Victoria / CC BY
Author:
Source