Charles, you do have some of the nicest supers in a collection and I would love to see them. Maybe I will make it up to a PA plow day this year and do that.
You are probably a lot like me. I have way more money in my tractors than I will ever get out of them. I do it because I enjoy it and I very seldom ever sell any and when I do there isn't much profit if any.
Looking at your machines I would say that the 1872 & 2072 should be worth $2500 - $3000 and the diesels $3k+but I don't think you'll ever get it.

I know that you are in the land of Cubs and probably have some real enthusiasts in your area that may appreciate what you have so that should help too. If your area is a lot like mine, you are surrounded by a bunch of cheap *sses that don't want to pay anything. I would put them up for sale for a profit and if they don't sell let them take up space. I would rather see them sit unused than someone buy them and try and flip them.
Ronnie, I'll take a MTD built machine over an IH any day. Ya, the old iron is nice and I have a bunch but you can't beat the 72, 82 and Cyclops series IMHO.