Speaking from an auctioneers stand point. I don't see any more value that like new tools. Anything that was sold to be a collectible ain't collectible. They flood the market with these things.
I used 5,000# concrete for the strength and it finishes a lot better than 3,000#.
Flame producing heating is a NO NO on the floor of a garage. Need to consult with inspections about the required distance from the floor.
I have been buying Snap On since the '50's and have NEVER had a problem with the salesmen. I just had a soft deadblow hammer replaced for free that I have had over 30 years. They have replaced tools that were over 40 years old with obvious signs of being used on impacts without one comment or...
My in floor lift was installed in 1988. Dumb **** me was walking through the garage last week, brain out of gear or in some other place, and tripped on it and did a face plane. I have bruises on my abdomen in the pattern of the bolts on top of the lift