This was at a local recycling resale depot and I couldn't resist paying $25.
http://i11.photobucket.com/albums/a1...y/IMG_9202.jpg
http://i11.photobucket.com/albums/a1...y/IMG_9207.jpg
http://i11.photobucket.com/albums/a1...y/IMG_9208.jpg
In one word, it's impressive. Manufactured by Central Dynamics in Montreal with everything date stamped between 1976 and 1978. Serial number 005.
I have been unable to find any documentation for this so I'm not completely sure how to wire it up. Some of the connections are clearly marked but others are not. What are the odds the manual has been scanned in?