1977 John Deere 6600 4WD Combine, 5,043 Engine Hours Showing, John Deere 404 Cu In 6-Cyl Diesel Engine, 4-Speed Hydrostatic Transmission, Straw Chopper, Automatic Header Height Control, 24.5-32 Front Tires, 14.9-24 Rear Tires, Seller States It Has Always Been Stored In Shed & Has Approx 500 Acres On Unused Concave & Rasp Bars, SN: 257370H