Massey Harris Model 12 '12-20' agricultural tractor on steel wheels, by the Massey Harris Company, Racine, Wisconsin, U.S.A., Serial No. 105800, 1929. Engine: 12-20 hp, 4-cylinder overhead valve gasoline (petrol)/kerosene. Fitted with power take-off. Essentially a 4-wheeled Wallis Cub (see Inventory No. 1982-994), the former company was bought by Massey Harris from J.I. Case in 1928.