When discussing Case GT’s, it is wise to never say never. :sidelaugh:
However, I have never seen a true Power White Case GT so my reply would be a firm no until someone can show me one that is Power White and has been since it left Winneconne.
What I have seen is one or two very, very light shaded Desert Sunset tractors that could be confused with white, I suppose. But it would be a stretch to do so. I spoke with another collector about that issue and he thought that it was likely due to an improperly mixed barrel of paint from a supplier. Who knows for sure?
Power White can be bought in rattle cans. Why not spray up a piece of tin and take it to this man’s residence for comparison to his tractor. I’m betting that you will see a dramatic difference between what you have and what he thinks is Power White.