Clavioline CM Electronic Monophonic Keyboard

The Clavioline, a portable monophonic electronic keyboard, was one of the most popular electronic instruments during the fifties and the sixties. The first version of the instrument was designed by M. Constant Martin at his factory in Versailles and appeared in 1947. The Clavioline was licensed to various manufacturers, by Gibson (USA), by Selmer (UK), an expanded concert version by René Seybold and Harald Bode, marketed by the Jörgensen Electronic Company of Düsseldorf, built into dance-hall organs by the Belgian company Decap and Mortimer/Van Der Bosch. This early model in the smem collection was produced under licence by Constant Martin and René Beauveau in Paris and distributed by Jörgensen in Germany. 
The clavioline has been used by numerous musicians for songs. The best known are Telstar by the Tornados, and the Beatles' Baby You're A Rich Man.

The Clavioline is a battery powered keyboard instrument. It consisted of two units: the keyboard with the controllable sound unit and a carrying case box with an amplifier and speaker. By using an octave transposer switch the single oscillator could be set within a range of five octaves (six in the Bode version). The standard Clavioline offered 18 on/off switches (22 in a later Selmer version) called stops on its front panel  for controlling timbre via a high pass filter and a low pass filter, octave range and attack plus two controls for vibrato speed and intensity. The 14 tone modifiers were named 1 to 9, plus O, A, B, V and P, and these were augmented by four vibrato switches: I, II, III and Amplitude. The overall volume is controlled by a knee lever. (source: 120 years)