Americas centered on the Canal Zone. Printed on the flat plate printing press, of 1951—1958, in denominations ranging from 4-cents to 80-cents. Printed in 1963, he 8-cent Winged Globe is the only Winged Globe printed on the rotary press. The 25-cent Globe and Wing stamp, issued on August 16, 1958, intended to pay the new airmail rate on letters to Europe. Canal Zone seal and jet, issues of 1965–1976 The Canal Zone Seal and Jet airmails were printed on the Giori press, issued in two series at intervals between 1965 and 1976. The first series (6-, 8-, 15-, 20-, 30-, and 80-cent) replaced the previous series of airmails on July 15, 1965. The 10-, 11-, and 13-cent stamps were printed to meet airmail rate changes to the United States, while the 22-, 25-, while 35-cent stamps covered the new air mail rates to the rest of the world. Each denomination in this series of twelve-stamp stamps represents a specific postal rate with the exception of the 80-cent, used to cover general and larger postage costs, usually used in conjunction with one or more of the lower rate stamps. Postage due For several years after the United States assumed authority of the Canal Zone and its post offices no postage due stamps had yet been issued. Letters that were lacking in sufficient postage when received at the office of delivery were simply hand stamped "postage due", with the appropriate amount due indicated. Prior to its delivery, any such letter was affixed with a postage stamp in the amount of the postage due and then cancelled in the standard fashion. Then in 1908, Gerald D. Bliss, the postmaster at Pedro Miguel post office conceived the idea of precancelling entire sheets of stamps with the Postage Due cancelling stamp. This was not official method and was done simply to save time. To save time it soon became necessary to print and use specific Postage Due stamps without having to stop and treat every such letter lacking in sufficient postage. The ten cents stamp was the one most used but all of the denominations of the 1906, 1909 and 1910 issues were precancelled in such a manner. By 1914, Postage Due stamps were finally issued. These were the current Postage Due stamps of the United States, consisting of the denominations of one, two and ten cents overprinted with the words "canal zone" in one