An inserted sheet contains a notice about changed prices from April 1, 1914. Demand for rolls had declined noticeably with the increasing spread of the gramophone and the radio – and in view of the approaching First World War – and like other suppliers, Philipps tried to increase sales with lower prices. Accordingly, all entries in the book were corrected noticeably downward around April 1, 1914 with the two price variants (Duca and Pianella electric).