When an authorized user made a purchase, a clerk retrieved the plate from the stores files and then processed the purchase.Ĭharga-Plates speeded back-office bookkeeping that was done manually in paper ledgers in each store, before computers. In some cases, the plates were kept in the issuing store rather than held by customers. The record of the transaction included an impression of the embossed information, made by the imprinter pressing an inked ribbon against the charge slip. It was embossed with the customers name, city and state. It was a 2 in 1 in rectangle of sheet metal related to Addressograph and military dog tag systems. ![]() ![]() The Charga-Plate, developed in 1928, was an early predecessor to the credit card and used in the U.S. Some charge cards were printed on paper card stock, but were easily counterfeited. Western Union had begun issuing charge cards to its frequent customers in 1921. ![]() In 1938 several companies started to accept each others cards.
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