The postage stamp is a kind of security, although it is small both in size and face value. It is made by elaborate printing technologies and technologies that ensure the homogeneity of production, leading it to be called a "paper jewel" or a "small work of art." Postage stamps are convenient to use, aesthetically appealing and homogeneously produced: they are built not only using printing technologies, which are worth describing as an "art" form, but also on the basic technologies for papermaking, gumming, and perforation. The requirements for postage stamp production have also been changing through history and with the changing needs of their users.
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