Looks like a dead ringer for the '82 72x, if no braze-ons were changed before powder coat.
https://www.vintage-trek.com/images/trek/Trek3pg8.jpg
Interesting that the '82 in the classifieds has the cable above the chainstay and the '82 in the catalog scans it goes under. The '82 catalog does show a mix of above and under chainstay cable routing throughout the model line. Maybe a running change trickling down from the upmarket end.
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Owner & co-founder, Cycles René Hubris. Unfortunately attaching questionable braze-ons to perfectly good frames since about 2015. With style.
Last edited by scarlson; 05-24-20 at 08:31 AM.