Guy is selling a 1977 Schwinn. Serial number is EN619302, This puts it at a manufacturing date of May 1977, so that checks out. I'm not sure the particular model, but based on the color from these pictures, my guess is that it's a LeTour 12.2.
Looks like a Varsity to me...forks, the crank set, the stem, etc. With a mattress saddle? If the generator light set works, however, that is a plus. If the tires are and brake pads are good, and everything is in order, from $90 to $130. That saddle takes a couple bucks off the top...the top figures in the generator set.
The oval head badge and seat stay treatment suggest it's an electro-forged model and the forged fork suggest it's a Varsity. The 300 x 200 pixel photos don't help much in IDing it. Le Tours were all lugged.