Hey Trip,
Demand can be a fickle thing, based on a range of psychological factors that affect perception, and ultimately the market. Hindsight is perfect of course, but I don't think many of us would have predicted the muscle car thing, or that Nehru jackets would be in and out of fashion so quickly.....
However, a core group of passionate believers can influence others with their recognition of value. Together with a limited supply, it creates the slow but steady appreciation we've seen.
Thats one reason many coupe owners report difficulty accepting the prices of recent sales, yet would not sell their own cars for anywhere near what they paid. This is the kind of insular dynamic that often isn't recognized.
So you're right, its not likely you'd get 100k simply because you asked for it. We're not seeing the herd mentality of muscle cars. But if you've got a well cared for coupe, recent sales provide the increasing price ranges.
As long as we continue to recognize, value and enjoy coupes for what they are....classic beauties, appreciation will move accordingly.
And once again, it doesn't hurt that the well cared for coupes are only sold with much difficulty....and when the price makes it less painful.
I haven't seen your car, but I suspect that you'd also be in this reference group.