Parts of them fit the unit planters - 185, 295, etc that are powered by the press wheel. (IHC version of the JD 71....) I could use a few good plate mechanisms, with a good knockoff wheel....
The seed hoppers and any other should be worth something.
There are also some parts in common with a 400 - the opener disks, at least.
Won't make you rich, but you could come out better than cutting up for scrap I'd think.