GMD, good post. One of the reasons that early bird owners don't generally build or restore them with an eye on final value is that they are, and have been, almost never worth what it costs to fix them up on the open market. You'd have to be some kind of an idiot to think you could.
I, personally, get biggest charge out of someone looking it over and seeing what they pick out as the most intersting part to ask about. It's almost always the roll bar that gets the most comments these days.