1957 Allis-Chalmers D17 2WD Tractor, Allis-Chalmers 3.7L 4-cyl, Gas, Water Cooled Engine, 8-speed Partial Powershift, Live PTO, 540 PTO, Rear PTO Location, 8.5-16 Front Tires, 18.4-26 Rear Tires, Pin Hitch, SN: 2120