I have picked up a set of Oliver disc from the 1940 or 1950's. They are manual, about 7 feet wide. I was told they were a PL????? 

I want to restore them and paint them. Would the color be the same as a 60 or 70 tractor? Would there be any decals on it and where would they have been placed.

Any help would be greatly appreciated.

Thanks in advance.