1979 John Deere Model 4640 Diesel Tractor, SN: 4640R008270R, John Deere Diesel Engine, Quad Range Transmission, Cab with AC Heat, AM/FM, 11,023 Hours, Aux. Front Fuel Tank, (6) Front Weights, 3-Point with Quick Hitch, 520/85R38 Radial Tires with 9-Bolt Radial Hub Duals, 14.L-16.1 Front Tires, (3) Hydraulic Remotes.