via this Reverb listing

1970; SERIAL Nr: 4052 KS
bought in Osnabrück, Germany, 1990 former owner Klaus Schulze as told
comes with:
·Keyboard, Sequencer KS,+ Jones cable,
·Original suitcase with keys
·Behringer 960 analog sequencer incl. case, power supply new
·Kenton jones cable for external sequencer
·Potabellabz sister card ,new
·Grundig analog oscilloscope MO52,+ manual+ 2 BNC Audio cables
·A pile of original EMS magazines from the 70/80s
·Play the synthi book Rehberg in German
·Original spare parts for the synthi, EMS,
·30-50 blank dope sheets; EMS Service Manual complete
·AKG microphone + mono audio cable from ORF 80s
·AKS SYNTHI FULLY SERVICED EMS CORNWALL, + OSCILLATOR1 SYNC to 2/3 SWITCH BY EMS orig. power cord
Small chips on the back of the Keyboard"