USA 1 dollar Annie Jump Cannon
USA 5 dollars Civil War Battlefields
USA 25 cents Cumberland Gap
Germany 2 mark Max Planck
China - Republic 20 cents
Japan 20 yen
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
Slovenia
United States
Vatican City 
