Postage stamp prepaying. From when the first postage stamps were used, postmarks were applied to prevent the stamps being used again. The first stamp, the "Penny black", became available for purchase 1 May 1840, to be valid as of 6 May 1840. Two days later, 8 May 1840, the Two penny blue was introduced. The Penny black was sufficient for a letter less than half an ounce to be sent anywhere within the UK. Both stamps included an engraving of the young Queen Victoria, without perforations, as the first stamps were separated from their sheets by cutting them with scissors. The first
Postage stamp design and aiding clerks in quick recognition of appropriate postage, postal customers simply expect stamps to carry a design. The fundamental purpose of a stamp is to indicate the prepayment of postage. Since different kinds and sizes of mail normally pay different amounts of postage, the stamps need to carry a value. In a very few cases, the denomination has been omitted; for instance, during the tumults of 1949 China, undenominated stamps were issued, so as to allow the price of a stamp to fluctuate on a daily basis depending on the value of the gold yuan. The usual form of