The International R Series was made from 1953 to 1955.
Powered by a 305 cu. in. V6 known for durability, low speed torque but poor mileage. 1965 was the first year that four wheel drive was supplied from the factory.
Painted on the hood, “U.S.A LS-5.3-4l60-E” likely indicates a Chevy LS 5.3 liter V8, and a GM 4169E auto transmission.