According to the Vintage Trek site, the serial number along with catalog matching components suggest this is indeed a Columbus 937. It could be a Tim Issac build as he joined Trek in 79 but I'll never know. Willing to be optimistic, however. This will get a new decal set, cleaned, polish the components, clean any surface rust, and ready to go. Previous owner upgraded the rims which is great. Only thing I can tell not original is the rear hub, saddle, seat post. Enjoy!