George,
My 128 is the work tractor. It also has scratches and dirt on it. After all, it is just a 128.
Use one or two for work tractors, and restore the others for show.
To me, the older cubs would be more collectible and interesting to see.
When I go to a show and see something like a 128, I think; what a nice tractor.
When I go to a show and see an O, 70, or 100 fixed up I think; WOW! what a nice tractor!
Don't get me wrong, I love them all.
It's like looking at vehicles.
I look at a new vehicle, it's like looking at Steve B's fancy diesel cubs! Nice!
I look at a 55' Chevy all fixed up, and it's like looking at a O, 70/100. Classic!
That's just my way of thinking.