It's '80s--the flat crown fork, shape of the horizontal dropout, cable routing.

Look for a serial number on the bottom bracket shell.

Hopefully the inside of the tubes aren't rusted. If they aren't, pick up a can of JP Weigle Framesaver and treat the frame the way it should be treated.

Just from the pictures, you can easily restore the frame but it will probably cost more to do that than you paid.

Please turn it into the road bike it was meant to be...