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 the Canal Zone issued its first postage stamps on June 24, 1904. Initially these were the current stamps of Panama or (less often) the U.S., overprinted with 'CANAL ZONE' in various styles. Philatelists have identified over 100 varieties, some of them quite rare (and counterfeited). The Republic of Panama was formally part of Colombia, and after it broke away from Colombia, with assistance from the United States, it established itself as a separate nation where it immediately became necessary to establish its own post offices and issue its own postage stamps. The Canal Zone Post Office was inaugurated on June 25, 1904. Beforehand