Reminds me of my 1983/4 Schwinn "Super Sport" - here's a pic of the guides under the BB:
and the hanger looks v. similar, as does the crown of the fork, and the rear drop-outs.
Here's a link to some more pics of mine:
Super Sport
Yours is a nice frame! I was given a Schwinn Le Tour (just the frame) in the same colour as yours and I'll post more pics when I've finished restoring it!