image courtesy of Kevin Lightner
a list of modules for the Series 200
"The smallest of the 200 series Electric Music Boxes, the 101 features a level of functional versatility and sophistication not previously found in a system of its size and price. System 101 is aptly suited to the needs of music educators, broadcast and recording studios, small electronic music studios, filmmakers, and composers."---[from Buchla & Associate's Series 200 Data Sheet, System 101 brochure]
This system features a rare "conventional" keyboard (rare, at least, for a Buchla).