I have a '79 930. Agree that Hagerty values need to be applied with realistic grading on the condition scale. That's a very subjective determination of course. I view my car as a solid condition 3. I have no delusions it's a 2 or 1 and it probably has too many miles to ever be. Based on his post, Ficke would probably say my car is a 4 right now, and maybe a 3 after paint work. Primary visible flaw is the paint is sand blasted up front because I drive the damn thing. Easy to fix, but I prefer to keep it with driver patina while I own it. If I were to list, I would have paint work done first and I have no doubt that I'd recoup that cost.
I believe that the 930 "deserves" to appreciate in value (and not just because I own one), but other than the 3 liter models, I don't think I have seen anybody on the 930 forum cashing in on this supposedly hot market. I've gotten a few random PMs inquiring about my car over the last year, which never happened before...no one has offered me their late model GT3 as a trade either