Oliver built the tractors for cockshutt from 1936-1946 or something like that. I know it started in 36. Anyway, they were oliver tractors, built in Charles City Iowa, but minor changes such as some name castings including the name on the serial number tag. Your cockshutt is nothing more than an oliver slightly modified for the canadian market. Oliver 60, 70, 80, 90's and Oliver Hart Parr models that were predesessors, all had this done to them during this time for the Canadian market. The later Olivers once they were aquired by white, went through this same sort of name changing on the tractors. If you are in the US it is possible your tractor was intended for Canada but never made it ='ing the Oliver name on the radiator. That has been found before. Then the tractor would be regular green and red if so. If you live in Canada, it was probably just replaced with an oliver radiator. It was a strange thing I know, but Cockshutt seemed to like to be able to market olivers as thier own, many times the tractors were painted cockshutt colors once in Canada, better sales to canadian consumers I guess as a cockshutt tractor. Hope this helps. Your tractror is an oliver made, niether company owned each other until white aquired them both with Minneapolis Moline in the early 60's.