979s haven't sold for that much in the last few years, unless it's in perfect, NOS condition. Typical max prices for very good, near mint condition used 979 framesets had been stuck at around $220 - 240ish (on a very good day) for a while now, for a popular color and size. One in this corroded condition and most likely missing most of its decals might not even bring half of that, unless it has some special feature like aero/"losenge" section frame tubes. Unfortunately too, the 979 frames are still doggedly followed by the mostly already disproven reputation of having questionable quality tube to lug bonding which had also kept the price down for the framesets.
If the what looks like mostly surface corrosion had not affected the tubes and bonding on the frame structurally, I'd say it still might be worth your time restoring and keeping it. A beautiful polished, corrosion free, silver 979 frameset might only be a polishing bonnet, compound and some elbow grease away.
Chombi