The International 650 was built in 1956, 1957 and 1958. There were 4933 units built. It was available in diesel, gasoline and lp . In 1958 the 650 sold for $4400.The 4 cylinder diesel engine had a displacement of 350 cubic inches and produced 58 hp. Appearance wise it was similiar to the WD 9 with improvements like operator platform, over the tire fenders , chrome lettering etc. The 650 replaced the 600 and was replaced by the 660, a completely changed tractor.Our 650 is serial #4079. It was built in 1957. We bought the tractor in Ninette.