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 meter solution was a postage stamp affixing machine, introduced in the 1880s. The earliest record of a franking machine was by Frenchman Carle Bushe who in 1884 obtained a British Patent for a device that would print a stamp on an envelope and record postage via a counting device. However, Bushe's device is not known to have existed, and the idea was not pursued. The first franking machine known to have been placed into use was a coin operated machine invented by Charles A. Kahrs. It was installed in the lobby of the General Post Office in Christiana, Norway, on August