CRB Computer Band 2000 Rhythmus Drum Keyboard

via this auction.
Details Google translated:
"As one such a thing exactly calls cannot unfortunately not say, one can thereby rhythm, Drum and Keyboad would sound produces. It is very high-quality verarbeited (metal/casting metal), it has very beautiful switches pressed the color to change (see photo). One can lautsärken e.g. thereby speed, switch and change einzele instruments or Schlagzeug voices on/out etc. It has various (5 pieces) connection types on the back. think it comes from/the 60's 70's?"
via Music Thing