Originally Posted by T-Mar
The frame is from 1981. The crankset, pedals and shifters are from the early 1980s, Dura Ace EX 7200 series, but the rear derailleur appears to be a late 1970s version (DA-100). The crankset date code is July 1980. I can't quite tell from the pics, but the front derailleur appear to be 600EX, in which case it is probably original. The pictured rim is original, so the hubs may be also. The Edge brake is about 1990.
It's a somewhat odd collection of parts - I don't have any history on the bike either.
I think I'll probably just ride it as is (except for new tires and some minor maintenance work) for now. The thought of turning it into a SS had entered my mind, or maybe eventually upgrading the drivetrain to index shifting.