Interesting...
I have come into posession of this Columbia 10 spd. Tandem recently, I havn't had
time to work on it much. It appears about 80% complete, the former owner was trying
to make it into a recumbant (seat hoseclamped on)...
When I get time I think I'll rebuild it, I will probably have to fabricate a seat/handelbar
thing for it and new chains etc. but thats no big deal.
It also has an internal disk brake of some kind on the rear and nice chrome fenders..
I'm guessing this thing was built in the early 70's.
I kind of wonder what this thing may be worth ??