Farmall M Tractor Serial Numbers, Price, Review, Specs, Engine Oil Capacity, History, Features & Pictures The Farmall M Row-Crop tractor was manufactured by International Harvester under the Farmall brand from 1939 to 1953. Styled by Raymond Loewy, the Farmall M was the largest of International Harvester's row crop tractors during its first production. Farmall M was the … [Read more...] about Farmall M Tractor Price, Engine Specs, Serial Numbers & Features