Vintage Columbia Tri-Coaster (or Tourist III). I’ve had this bike for a few years now, and I’m looking to post it soon in order to save towards a new road bike. The only issue is, I cannot figure out which year this was manufactured in. The only two numbers on the frame are both located on either side of the fork, but neither match to any old Columbia serial numbers (they all begin with letters). Does anyone have any additional information on this bike? Thank you.
by AgnosticWaterbear