Originally Posted by T-Mar

THe frame was built in June 1972, so it should be a 1972 model. It's possible that the bicycle hung around in the LBS for 6 months.

The original rear derailleur would have been a SunTour V. The brakes would have been Dia-Compe center-pull. Neither should be too hard to find or very expensive, should you decide to restore it. However, the freewheel also appears to have been replace to obtain much lower gears and should you decide to keep them, a V will not work, though a log cage VGT would and will be closer to original. The wheels and pedals also appear to be repalcements. Thxs for posting.