Postage stamp stamps did not need to show the issuing country, so no country name was included on them. The UK remains the only country to omit its name on postage stamps, using the reigning monarch’s head as country identification. Following the introduction of the postage stamp in the UK, prepaid postage considerably increased the number of letters mailed. Before 1839, the number of letters sent in the UK was typically 76 million. By 1850 this increased five-fold to 350 million, continuing to grow rapidly until the end of the 20th century when newer methods of indicating the payment of postage reduced
Postage stamps and postal history of Papua New Guinea on a five stamp series issued on 21 April 1975. In August, the four stamps marking the fifth South Pacific Games in Guam were the last before independence on 21 September 1975. This is a synthesis of the stamps used in Papua New Guinea during its philatelic history, distinguished by the country name printed and the currency expressed on the stamps. Postage stamps and postal history of Papua New Guinea The postage stamps and postal history of Papua New Guinea were linked to the Australian administration on the eastern part of the island of New Guinea until its independence in