The Drum Dial - Volume 2

Christoph T. M. Krause lives in Cologne Germany.He is a passionate collector of old telephones. The Drum Dial has taken him by storm. Krause loves its design colours compact workmanship in its interior and most of all its unusual way of dialling.Almost all telephones of the 1950s are equipped with rotary dials but Siemens broke new grounds with the Drum Dial.In this second volume Krause presents the chronology of newly discovered patents which since 1931 and with interruptions due to World War II were developed over two decades resulting in an innovative total work of art a telephone that is one of a kind.