International Head Quarters
Angola (1905) - (C)
Antigua (1903) (R)
Argentina (1890) (D)
Australia (1881) (T)
Austria (1927) (R)
Barbuda (1903)
Bahamas (1931) (D)
Bangladesh (1970 (C)
Barbados (1898) (D)
Belgium 1889) (C)
Belize (1915) (R)
Bermuda (1896) (D)
Bolivia (1920) (D)
Botswana (1997) (R)
Brazil (1922) (T)
Burundi (2007)
Canada (1882) (T)
Chile (1909) (D)
China (1916)
Colombia (1985) (T)
Congo (Brazzaville) (1937) (T)
Congo (Kinshasa) (1934) (T)
Costa Rica (1907, 1975) (R)
Cuba (1918) (R)
Czech Republic (1919,1990) (R)
Denmark (1887) (T)
Dominican Republic (1995) (D)
Ecuador (1985) (D)
El Salvador (1989) (R)
Estonia (1927, 1996) (R)
Faeroes The (1924) (T)
Fiji (1973) (D)
Finland (1889) (T)
France (1881) (T)
French Guiana (1980) (R)
Georgia (1993) (R)
Germany (1886) (T)
Ghana (1922) (T)
Greece (2007)
Grenada (1902) (R)
Guam (1994) (R)
Guatemala (1976) (R)
Guernsey (1879) (R)
Guyana (1895) (D)
Honduras (2000) (R)
Hong Kong (1930) (T)
Hungary (1924,1990) (R)
Iceland (1895) (R)
India (1882) (T)
Indonesia (1882) (T)
Ireland Republic of (Eire) (1880) (T)
Isle of Man (1883) (R)
Italy (1887) (C)
Jamaica 1887 (D)
Japan (1895) (T)
Jersy (1879)
Kenya East (1921) (T)
Kenya West (T)
Korea (1908) (T)
Kuwait (2008)
Latvia (1923,1990) (R)
Lesotho (1969) (R)
Liberia (1988) (C)
Lithuania (1998) (R)
Macau (2000) (R)
Mali (2008)
Malawi (1967) (C)
Malaysia (1938) (R)
Marshal Islands (1985) (D)
Mexico (1937) (T)
Micronesia (1993) (R)
Moldova (1994) (R)
Mongolia (2008)
Mozambique (1916) (R)
Myanmar (1915) (R)
Namibia
Netherlands The (1887) (T)
New Zealand (1883) (T)
Nigeria (1920) (T)
Norway (1888) (T)
Pakistan (1883) (T)
Panama (1904) (R)
Papua New Guinea (1956) (T)
Paraguay (1910) (D)
Peru (1910) (D)
Philippines (1937) (T)
Poland (2005) (R)
Portugal (1971) (C)
Puerto Rico (1962) (D)
Romania (1999) (R)
Russia (1913, 1991) (T)
Rwanda (1996) (R)
St Christopher Nevis (St Kitts) (1904) (R)
St Helena (1884) (D)
St Lucia (1902) (R)
St Marten (1999) (R)
St Vincent (1903) (R)
Singapore (1935) (T)
South Africa (1883) (T)
Spain (1971) (C)
Suriname (1926) (R)
Sri Lanka (1883) (T)
Swaziland (1960) (D)
Sweden (1882) (T)
Switzerland (1882) (T)
Taiwan (1965) (R)
Tanzania (1933) (C)
Tonga (1986) (R)
Trinidad & Tobago (1901) (R)
Uganda (1931) (R)
Ukraine (1993) (R)
United Kingdom (UK) (1865) (T)
United States of America (1880) (T)
Uruguay (1890) (D)
Venezuela (1972) (R)
Virgin Islands (1917) (D)
Zambia (1922) (T)
Zimbabwe (1891) (T)