Wish I would have seen this sooner. I love old tractors. See my archived
restoration thread. The painted tractor in that thread was just delivered to it's new owner 2 weeks ago. It's going to a collector in Sweden of all places. If you haven't already, go find a forum called Smokstak and post your auction there. The forum is totally dedicated to all things old. Looks like there are some very nice tractors your grandpa fixed there that a lot of those guys would be very interested in. Especially those JD's. I'm certain that there are a lot of guys out there that would phone in bids to get some of them.
Dad and I have a super rare one in the shop now. A couple hundred of these Case tractors were made with a car engine as an experimental run. This is only the 3rd one to turn up in the collecting world and Dad and I literally stumbled on it then didn't really want it.
It's also most likely the oldest one of it's model in existence. It was missing the cylinder jugs and some other parts and we hunted extremely hard to find the parts. And we found them! We're gonna try to have this old girl going by the end of August. She's had a tough life and has quite a story to tell.
And a few others all belonging to me, my brother, or my Dad.
A little bigger Gibson than your A.
And another 50 more that I probably shouldn't spam your thread with.