There are several possibilities:
The following are starting serial numbers for popular International Harvester and Farmall models by year: Farmall Cub Farmall Super C 121,453 (Est) International Harvester Tractor Serial Number Table-
: This is the unique production number for your specific machine. Where to Find the Number There are several possibilities: The following are starting
Identifies the general machine type (e.g., 259 for certain Farmall models). 259 for certain Farmall models).