Canada 25 cents
Italy 50 euro cent
Spain 5 céntimos
China 2 fen
China - Empire 3 mace 6 candareens
Germany - GDR 20 mark 200th Anniversary - Birth of Carl Friedrich Gauss
Andorra
Australia
Austria
Belgium
Canada
China
Cyprus
Germany
Spain
Estonia
Finland
France
United Kingdom
Greece
Croatia
Ireland
Italy
Japan
Lithuania
Luxembourg
Latvia
Monaco
Malta
Netherlands
Portugal
San Marino
Slovakia
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Vatican City 
