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20 zloty – The grosz of Casimir the Great
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Country
Andorra
Argentina
Austria
Belarus
Belgium
Bulgaria
Canada
Croatia
Cuba
Cyprus
Czech Republic
Denmark
Ecuador
Estonia
Finland
France
Germany
Greece
Guatemala
Hungary
Ireland
Isle of Man
Italy
Japan
Kazakhstan
Latvia
Lithuania
Luxembourg
Macedonia
Malta
Mexico
Moldova
Monaco
Netherlands
Nicaragua
Norway
Paraguay
Peru
Poland
Portugal
Romania
Russia
San Marino
Serbia
Slovakia
Slovenia
South Korea
Spain
Sweden
Switzerland
Turkey
Ukraine
United Kingdom
USA
Vatican City
Issue year
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
2011
2010
2009
2008
2007
2006
2005
2004
2003
2002
2001
2000
1999
1998
1997
1996
1995
1994
1993
1992
1991
1990
1989
1988
1986
1985
1984
1983
1982
1981
1980
1979
1978
1977
1976
1975
1974
1973
1971
1970
1967
1964
1960
1958
1952
1951
1949
1939
Face value
0.25
0.4
0.5
1
1.25
1.5
1.75
1.95
2
2.5
3
4
5
6
7
7.5
8
10
11
12
12.5
14
15
20
25
30
40
50
75
100
150
200
250
300
400
500
700
750
1,000
1,500
2,000
2,018
2,500
3,000
4,000
5,000
7,500
10,000
15,000
20,000
30,000
50,000
100,000
500,000
100,000,000
Alloy
Gold
Silver
Copper–Nickel (CuNi)
Nordic gold (CuZnAl)
German silver (CuNiZn)
Bimetal: silver, gold plating
Bimetal: gold, silver
Bimetal: CuNi, Brass
Bimetal: CuNi, nordic gold
Bimetal: silver, nordic gold
Bimetal: silver, niobium
Nickel
Nickel, bronze plating
Bronze
Copper
Bimetal: silver, titanium
Brass
Palladium
Platinum
Quality
Proof
Brilliant Uncirculate
Uncirculate
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