Law75, you can do whatever you like, of course, but citing single examples as support for a trend is statistically invalid. BaT auctioned off a modified Healey for $200K not too long ago. Does that mean every owner of a concours car should modify it before selling it?? Of course not. There’s no statistical support for such a conclusion.
For years I have used the exact same source you referenced above (Hagerty) and have seen an undisputable trend over the last five or six years (all the data currently reported) that the values have been going down for all 3000s, except for concours cars which are flat. The graph has looked pretty much the same for the last 10 years. Given inflation and the increases in other segments of the collector car market over the last 10 years, I conclude the general production Healeys have peaked. This isn’t some recent trend either. I’ve been watching the data since 1994. Specials, such as the 100S and 100M cars are a different story. The 100s, in general, saw some solid increases over the past 10 years as well, but I believe they have also topped out. Could they start going up again? Anything is possible, but I see no factors to support such a projection. The group that we’re old enough to buy the car when new have already aged out. The Baby Boomers, who have fond memories of the cars from the time when they were kids, have already peaked. I don’t see the level of interest needed from people under 60 to maintain even the current values.