Antique nickel bronze national cash register, United States, circa 1910. Marked: "National". Some keys are stuck and the piece needs some attention. Note: In 1880 the invention that was patented under the name "Jack Ritty’s Incorruptible Cashier" changed retail business. The first cash registers had elegant polished wood casings. From 1888 onwards ornate cases of brass and cast iron were produced. The production of these fancy cases on cash registers ceased during the First World War due to demand for metal. From then on lmost registers were produced from less expensive sheet metal. Estimate: € 100 - € 150.