Thanks, Pete. I'll tip a couple for you tonight
I don't think it's an age/generation thing--we're mostly old farts here. My perspective was formed from my dad selling some of his treasures to disingenuous people--my dad's not naive, he was a factory/dealer rep for Ford for a few years (how he still has faith in his fellow man I don't know)--and how that hurt him. OTOH, we had a seller lower his asking price for a 100 when Dad told him it was for me--how often does that happen?!--and they became fast friends until the seller died a few years ago. And the car? Turns out it was a factory 100M, and Dad and I restored it over 10 years or so. Those events are, of course, priceless. If the seller of the car in question wasn't informed of the potential value of her late husband's treasure, and she finds out later--and that usually happens, sooner or later--how will she feel?
I'm reminded of the episode of 'Chasing Classic Cars' where Wayne Carini was asked to help dispose of a widow's pristine 100M. Carini's mechanic got the car in top running shape and they took it to auction (Carini seems to prefer auctions to private sales). The man's widow and children were all there to see their father's pride-and-joy fetch a good price--I thought it was a bit low--and Carini got his finder's fee (I'm guessing 10% or so). Good vibes all around.
I'm sure people who have been 'horse trading' cars for years have a different perspective.