Pic assist:
"Cleaned up ok" is an understatement; that's a very sharp example. And a sweet deal. I picked up its doppelganger, same color and I believe the same year, and paid almost as much ($US25.00), but that's with no wheelset, no derailleurs. It did have the nice original thumbie shifters, however. Indeed, your grip shifters must be a a replacement. Rear mech appears to be a 21st-Century replacement as well.
BTW, Jimmy from Quadrophenia called; he wants his mirror back.