• 20c Decimal Coinage, Proof (1966- ) Coins

Greysheet & Red Book® PRICE GUIDE

Values / World Coins / Australia / 20c Decimal Coinage, Proof (1966- ) / 1980 20c Decimal Coinage, Proof (1966- )
Filter
Year
1966
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2024
Series
Halfpenny
Halfpenny, Specimen
Halfpenny, Proof
Penny, George V (1911-1936)
Penny, George V, Specimen (1911-1926)
Penny, George V, Proof (1914-1936)
Threepence, Edward VII (1910)
Threepence, George V (1911-1936)
Threepence, George V, Specimen (1916-1922)
Threepence, George V, Proof (1911-1936)
Sixpence, Edward VII (1910)
Sixpence, George V (1911-1936)
Sixpence, George V, Specimen (1916-1922)
Sixpence, George V, Proof (1911-1936)
Shilling, Edward VII (1910)
Shilling, George V (1911-1936)
Shilling, George V, Specimen (1916-1922)
Shilling, George V, Proof (1911-1936)
Florin, Edward VII (1910)
Florin, George V (1911-1936)
Florin, George V, Specimen (1916-1922)
Florin, George V, Proof (1911-1936)
Crown, George VI (1937-1938)
Half Sovereigns (1855-1918)
Half Sovereigns, Proof (1853-1902)
Sovereigns (1855-1931)
Sovereigns, Proof (1855-1931)
1c Decimal Coinage (1966-2006)
1c Decimal Coinage, Proof (1966-2006)
2c Decimal Coinage (1966- )
2c Decimal Coinage, Proof (1966- )
5c Decimal Coinage (1966- )
5c Decimal Coinage, Proof (1966- )
10c Decimal Coinage (1966- )
10c Decimal Coinage, Proof (1966- )
20c Decimal Coinage (1966- )
20c Decimal Coinage, Proof (1966- )
25c Decimal Coinage (1966- )
25c Decimal Coinage, Proof (1966- )
50c Decimal Coinage (1966- )
50c Decimal Coinage, Proof (1966- )
55c Decimal Coinage (2009)
60c Decimal Coinage (2012)
$1 Decimal Coinage (1984- )
$1 Decimal Coinage, Proof (1984- )
$2 Decimal Coinage (1984- )
$2 Decimal Coinage, Proof (1984- )
$5 Decimal Coinage (1988- )
$5 Decimal Coinage, Proof (1988- )
$8 Decimal Coinage (2004- )
$8 Decimal Coinage, Proof (2004- )
$10 Decimal Coinage (1982- )
$10 Decimal Coinage, Proof (1982- )
$15 Decimal Coinage (2006- )
$15 Decimal Coinage, Proof (2006- )
$20 Decimal Coinage (1993-2003)
$25 Decimal Coinage (1992- )
$25 Decimal Coinage, Proof (1992- )
$30 Decimal Coinage (2000- )
$30 Decimal Coinage, Proof (2000- )
$40 Decimal Coinage (1995-1998)
$50 Decimal Coinage (2002- )
$50 Decimal Coinage, Proof (2002- )
$60 Decimal Coinage (2012- )
$100 Decimal Coinage (1995- )
$100 Decimal Coinage, Proof (1995- )
$150 Decimal Coinage (1995- )
$200 Decimal Coinage (1980- )
$250 Decimal Coinage (1992)
$300 Decimal Coinage (2006- )
$500 Decimal Coinage (2021- )
$1,000 Decimal Coinage
$1,000 Decimal Coinage, Proof
$3,000 Decimal Coinage (1992- )
$5,000 Decimal Coinage (2017)
$30,000 Decimal Coinage (2002- )

Sort by

Sponsor

shop Great Collections

Sponsor

shop Whitman

Sponsor

shop US Coins and Jewelry

Sponsor

shop

Sponsor

shop ICG

Legal Disclaimer

The prices listed in our database are intended to be used as an indication only. Users are strongly encouraged to seek multiple sources of pricing before making a final determination of value. CDN Publishing is not responsible for typographical or database-related errors. Your use of this site indicates full acceptance of these terms.

Read CDN Terms of Use

The 20c Decimal Coinage, Proof (1966- ) series of Australia in the World Coins contains 1 distinct entries. Australian decimal coinage.

The 20c Decimal Coinage, Proof (1966- ) series of Australia in the World Coins contains 1 distinct entries.

Australian decimal coinage.

 See More See Less
1980 20c Duckbill Platypus PR
1980 20c Duckbill Platypus PR

Legal Disclaimer

The prices listed in our database are intended to be used as an indication only. Users are strongly encouraged to seek multiple sources of pricing before making a final determination of value. CDN Publishing is not responsible for typographical or database-related errors. Your use of this site indicates full acceptance of these terms.

Read CDN Terms of Use

Available on Greysheet Marketplace

View All
1877 1c MS BN

Buy Now: $12,500.00

1943-D 10c MS FB

Buy Now: $165.00

1870 1c MS RB

Buy Now: $2,400.00

1906 1c PR RB

Buy Now: $550.00

Dealer Directory

View All Dealers

Constitution Coins, Currency and P M's

Constitution Coins, Currency and P M's
 FEATURED

Daniel Punchak

Sullivan Numismatics, Inc

Sullivan Numismatics, Inc
 FEATURED

Jon Sullivan

Land O Lakes , FL

Stack’s Bowers Galleries

Stack’s Bowers Galleries
 FEATURED

William Conroy

Miami, FL

Events

View All Events
calendar icon

Saturday, May 2, 2026

Map icon

Campbelltown Volunteer Fire Company

calendar icon

Saturday, May 2, 2026

calendar icon

Saturday, May 2, 2026