International Harvester (IH) tractor serial numbers are used to identify the specific production year and manufacturing details of a machine. Because IH produced hundreds of models under various brands like Farmall, McCormick, and Case International, serial number tables are typically organized by specific model series. Common Starting Serial Numbers by Model
Note: This is a concise, representative table to illustrate format and typical ranges. For precise restoration work use official factory records, recognized serial reference books, or trusted registries. International Harvester Tractor Serial Number Table-
: Your tractor was built in a specific year if its serial number is equal to or greater than that year’s starting number, but less than the starting number of the following year. International Harvester (IH) tractor serial numbers are used
The next three digits (e.g., 009) identifying specific options. Country Code: A letter (e.g., "U" for USA). For precise restoration work use official factory records,
produced in 1939 (the first year) would have a serial number starting at 501.
Many common models, like the International Cub, have the plate on the right side of the steering gear housing. Transmission or Clutch Housing:
IH adopted a "Kind/Code" format where the serial tag contains structured data about the machine's configuration.
