Eko Tiger 3000 Portable Analog Organ/Synthesizer, 1971, made in Italy

Link: combo-organ

The Tigermate and the Tiger are identical except for the rhythm unit, which adorns the only the Tigermate. 

The bass section comprises the first 20 keys (C-G) on the left, but there are no markings to indicate that. The "drawbars" are really just on/off switches - they only pull out about 3/4". The vibrato on the one I played was very slow - it must have needed adjustment. There's no line-out jack, only a headphone jack, but if you plug that into an amp it works pretty well. 

Controls:

• "Drawbars": Mello, Reed, Brass, Flute, Bass Chorus, Vibrato 
• Knobs: On/Off Volume, Bass Volume, Tone