As an insert, there is a note on changed prices as of April 1, 1914. The demand for reels declined noticeably with the increasing spread of the gramophone and radio - and in view of the approaching First World War - and like other suppliers, Philipps tried to achieve more sales with lower prices. Accordingly, all entries in the book were noticeably corrected downwards around April 1, 1914 with the two price variants (Duca and Pianella electric).