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Linn's World Stamp Almanac〔Donna O'Keefe Houseman, editor; ''Linn's World Stamp Almanac, Millennium (6th) Edition''. ISBN 978-0-940403-85-7〕 defines a provisional stamp as "a postage stamp issued for temporary use to meet postal demands until new or regular stocks of stamps can be obtained."〔( Rick Miller, "Lines of stamp classifications have blurred", 20030414 )〕 The issuance of provisional stamps might be occasioned by a change in name or government, by occupation of foreign territory, by a change in postal rates, by a change of currency, or by the need to provide stamps that are in short supply. An interesting example of issuing provisional stamps occurred during the Spanish-American war when supplies of stamps were low and the U.S. had occupation forces in Cuba. They are known as the "Puerto Principe" provisional stamps of 1898-1899. Over 40 different combinations of overprinted valuations and underlying Spanish Cuban stamps were produced under the auspices of the military forces over a three-week period from December 19, 1898 to January 11, 1899.〔Edifil; Catálogo Especializado de Sellos de Cuba, Tomo I (1855-1958), 2nd Ed.; Madrid, 2002 (in Spanish). ISSN 84-95019-08-6〕 These were replaced by another provisional set produced by overprinting U.S. stamps in the United States for Cuba. This second set of provisional stamps was sold for about eight months before the U.S. could print Cuban stamps. The U.S. civilian provisionals also included overprinted postal cards and stamped envelopes.〔Krieger, George T.; The Postal Stationery of the Possessions and Administrative Areas of the United States of America; United Postal Stationery Society, 2009, ISBN 978-0-9800112-3-4.〕 Provisional stamps are usually made by overprinting, surcharging and occasionally by bisecting pre-existing stamps. ==Postmasters’ provisionals== A subcategory, Postmasters’ provisionals, of particular importance in United States philately, comprises stamps that were issued by local postmasters in nations that had not yet begun to issue stamps for countrywide use. Between 1845, when the United States standardardized national postage rates, and 1847, when the post office issued its first stamps, postmasters’ provisionals were introduced in eleven American cities, including New York, Providence, Rhode Island and St. Louis, Missouri. Many of these stamps (particularly from smaller cities such as Millbury, Massachusetts) are notable for their great rarity, or for their relative crudity of design. Postmasters’ provisionals also played a significant role in early history of the Confederate States of America. Many localities began furnishing them after U. S. mail service ceased delivering Confederate mail in June 1861; for it was only in October that Confederate stamps for nationwide use first appeared. File:United States postmasters provisional St Louis 1845-46 10 cent postage stamp.jpg|Provisional stamp issued in St. Louis, 1845 File:Provisional 1862 New Orleans.jpg|Provisional stamp issued in New Orleans, 1862 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「provisional stamp」の詳細全文を読む スポンサード リンク
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