A FENA resource shows there are apparently 3 colors depending on the year of production. How can you tell the year of production, with which to choose the appropriate color? April 14, 2016.
Ferguson implements from the Ford Ferguson period were painted the same shade of gray, M-1000, as the Ford Ferguson tractor. Fergusons, from the TE/TO-20, TO-30 period were painted the same shade of gray, M-1001, as those tractors.
Ferguson implements from the gray/metallic green TO-35, bamboo beige/flint metal gray TO-35 and F-40 period were painted light Ferguson gray, M-1011, the same shade used on the gray/metallic green TO-35 sheet metal.
Deciding which shade of gray to use is often a matter of personal choice, possibly based on what tractors you plan to use the implements with. Implements with Ferguson-Sherman serial number tags, brass tags, and plows with cast top-link masts are clearly from the Ford-Ferguson period. Late production implements can often be identified by changes that occurred late in their production runs like the “N” base throw away shares used on late production plows. The stamped spider-wheels that replaced the cast spiders on late production side-delivery rakes, and other details are found in implement parts books.
When Ferguson “merged” with Massey Harris to create MHF, the Ferguson part numbering system was replaced with the Massey Harris system. The new Massey Harris Ferguson part numbers usually end with an M followed by one or two digits as in M1 or M91. As stocks of parts with Ferguson part numbers, such as AO-657 were exhausted they were replaced by parts with MHF part numbers ending in M1, M2, M91 or M92. This was true not only for replacement parts but also for parts used to assemble new machines. Therefore, a plow with frame or other non-wear parts with MHF part numbers are likely a late production plow from the TO-35, F-40 period that was originally painted light Ferguson gray, M-1011.