| Model | Serial Number Range | Year | | :--- | :--- | :--- | | | 501 – 45,000 | 1940–1953 | | W-6 | 501 – 60,000 | 1940–1953 | | W-9 | 501 – 18,000 | 1940–1953 | | WD-9 (Diesel) | 501 – 27,000 | 1953–1957 |
International Harvester (IH) used several serial number systems over its history, typically utilizing a starting serial number International Harvester Tractor Serial Number Table-
of the transmission housing, or the seat support, depending on the model. The Kind/Code Format | Model | Serial Number Range | Year
