‘9N’ years1939 thru 1941 = 3 speed forward transmission, solid radius rods, serial # is stamped on left side of engine block below cylinder head, 5 lug front wheels, 6 lug bolt rear axle, flathead engine, keyed steering wheel.
‘2N’ year 1942 thru 1947 = 3 speed forward transmission, 5 lug front wheels, tubular radius rods, 6 lug bolt rear axle, serial # is stamped on left side of engine block below cylinder head, flathead engine, keyed steering wheel.
‘8N’ years 1948 thru 1952 = 4 speed forward transmission, 8 lug bolt rear axle, flathead engine, used front mounted distributor until SN 263843, used non adjustable steering gears until SN 216989, 6 lug front wheels, script hood, generator on right side until SN 263843, script fenders starting June 1950 – up, adjustable steering box SN 216990 – up, generator mounted on left side after SN 216990, sidemounted distributor on right side of engine after SN 216990, tachometer (proofmeter) after SN 245637, splined steering wheel.
Golden Jubilee was made in 1953 & the NAA was made in 1954 both used overhead valve engine, had live hydraulics, rear axle hub held on to axle by a threaded nut. Hydraulic lines from live pump to rearend are exposed , 4 speed transmission, script hood & fenders, casting numbers on transmission & rear end start with ‘NAA’.