Originally Posted by
cudak888
It's not a 720, it's a 1982 Trek 728. The 728 had conventional sidepull/centerpull brake boss mounts - the '83 -'86 720 had braze-on cantiliver posts.
-Kurt
The photo of the 720 frameset in the 1982 brochure disagrees with you.
http://www.vintage-trek.com/images/trek/Trek3pg8.jpg