piastres = 1 pound Refer Egypt United Kingdom (UK) This was historically called the United Kingdom of Great Britain and Ireland (1801–1922) after which it became the United Kingdom of Great Britain and Northern Ireland or UK for short. It has never been a philatelic term, any more than England has, because the worldwide consensus among philatelists and postal authorities has been that the issuer of British stamps is called Great Britain. Refer Great Britain Great Britain (Regional issues) United Kingdom Trust Territory (UKTT) Refer Southern Cameroons United Nations (UN) Dates 1951 – Currency American, Austrian or Swiss depending on location Refer International Organisations United States Dates 1847 – Capital Washington, D.C. Currency 100 cents = 1 dollar See also Confederate States of America United States of New Granada Refer New Granada Universal Postal Union (UPU) Dates 1957 – Currency 100 centimes = 1 franc (Swiss) Refer International Organisations Upper Senegal & Niger Dates 1906 – 1921 Capital Niamey Currency 100 centimes = 1 franc Refer French Soudan Upper Silesia Dates 1920 – 1922 Currency 100 pfennige = 1 mark Refer Plebiscite Issues Upper Volta Dates 1959 – 1984 Capital Ouagadougou Currency 100 centimes = 1 franc Main Article Needed Includes Upper Volta (French Colony) See also Burkina Faso; French West Africa Upper Volta (French Colony) Dates 1920 – 1933 Capital Ouagadougou Currency 100 centimes = 1 franc Refer Upper Volta Upper Yafa Dates 1967 only Currency 1000 fils = 1 dinar Refer Aden Protectorate States UPU Refer Universal Postal Union (UPU) Uruguay Dates 1856 – Capital Montevideo Currency (1856) 120 centavos = 1 real (1859) 1000 milesimos = 100 centesimos = 1 peso (1975) 100 old pesos = 1 new peso Main Article Postage stamps and postal history of Uruguay United States Refer United States of America (USA) US Post Abroad Main Article Needed Includes Guam; Philippines (US Administration); Shanghai (US Postal Agency); US Post Offices in Japan US Postal Agency in Shanghai Refer Shanghai (US Postal Agency) US Post Offices in Japan Dates 1867 – 1874 Currency 100 cents = 1 dollar Refer US Post Abroad USSR Refer Union of Soviet Socialist Republics (USSR) Main Article Stamps of the Soviet Union USSR Issues for the Far East Dates 1923 only Currency 100 kopecks = 1 Soviet ruble Refer Union of Soviet Socialist Republics (USSR) Main Article Postage stamps and postal history of the Far Eastern Republic US Virgin