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Self-adhesive stamp. A self-adhesive stamp is a postage stamp with a pressure-sensitive adhesive that does not require moistening in order to adhere to paper. They are usually issued on a removable backing paper. Stamp collectors have criticized the format, because the rubber-based adhesive used tends to yellow the stamps progressively.
Postal service in the United States began with the delivery of stampless letters whose cost was borne by the receiving person, later encompassed pre-paid letters carried by private mail carriers and provisional post offices, and culminated in a system of universal prepayment that required all letters to bear nationally issued adhesive postage stamps.
By the middle of the twentieth century, hundreds of stamp clubs had formed throughout the United States, often affiliated with large organizations, such as the American Philatelic Society or the American Topical Association. Many published their own scholarly articles or journals, while others advertised in the journals of larger philatelic ...
Postage stamp gum. In philately, gum is the substance applied to the back of a stamp to enable it to adhere to a letter or other mailed item. The term is generic, and applies both to traditional types such as gum arabic and to synthetic modern formulations. Gum is a matter of high importance in philately.
For postage stamps, separation is the means by which individual stamps are made easily detachable from each other. Methods of separation include: perforation: cutting rows and columns of small holes. rouletting: small horizontal and vertical cuts. diecutting: cut paper to shape using a metal die—used for self-adhesive stamps.
The first stage involved the engraving of a background for the design. This was produced with a rose engine which laid down a circular pattern of symmetrical design onto a piece of soft steel. This was then partly cleared to leave a square shape and an area in the centre was further cleared in the shape of Queen Victoria 's head ready for ...
Nature of America. Nature of America is a series of twelve self-adhesive stamp sheets that the United States Postal Service released annually between 1999 and 2010 starting with the Sonoran Desert sheet [3] [5] and ending with the Hawaiian Rain Forest Sheet. [6] [7] Like the Celebrate the Century stamp series, these were printed on large sheets ...
5¢. Estimated value. $500-$11,000 [1] The New York Postmaster's Provisional is, as its designation implies, a postage stamp provided by the New York Post Office to facilitate the prepayment of mail at a time when the United States had not yet issued postage stamps for national use. Placed on sale on July 14, 1845, this was the nation's first ...
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