ALL M5's and M602's had the same fender design. Some of the late 5 Stars had this fender as well.
All agricultural production M5's had two tone paint. 1960 through around late 1962 had the bronze belly and Prairie Gold #3 for sheet metal and wheels. Every 1963 model I've seen(and I've not seen that many) had the newer Dyna Brown on the belly and the Industrial Yellow(at least that's what I've always called the later color) on the metal and wheels. These later models also had black decals and hood stripes instead of red.