International Harvester Tractor Serial Number Table- ((hot)) Jun 2026

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A tractor from the first year of production or a rare transitional year can hold higher collector value. A serial number table proves exactly what you have.

This was IH’s first modern row-crop tractor with a V-8 diesel option. The serial number table shows a critical split in 1965: International Harvester Tractor Serial Number Table-

| Model | Serial Number Start | Serial Number End | Year | |-------|--------------------|------------------|------| | Farmall A | 501 | 50109 | 1939 | | Farmall A | 50110 | 78434 | 1940-1947 | | Farmall B | 501 | 130838 | 1939-1947 | | Farmall BN | 501 | 16211 | 1940-1947 | | Farmall C | 43901 | 128650 | 1948-1951 | | Farmall Super C | 128651 | 170959 | 1951-1954 | | Farmall H | 501 | 40000 | 1939 | | Farmall H | 40001 | 390000+ | 1940-1953 | | Farmall M | 501 | 40000 | 1939 | | Farmall M | 40001 | 275000+ | 1940-1952 | | Farmall Super M | 275001 | 294000+ | 1952-1954 |

Example: *9*18*W*

(Note: IH serial numbers typically start at 501 for a new model run, not 1 or 1001.)

Do you have a serial number that doesn’t match any table? Post it on the Red Power Magazine forums—the IH experts there have access to the original microfiche records. Do you need help finding or original paint codes

Almost every major cast-iron part on an International Harvester tractor (engine block, axle housings, transmission cases) features a raised, cast-in date code. These codes consist of digits for the month and day, followed by a letter representing the year.

The next three digits (e.g., 009) identifying specific options. Country Code: A letter (e.g., "U" for USA). This was IH’s first modern row-crop tractor with

Collectors pay premiums for "first-year" models, "last-off-the-line" units, or low-production runs. How to Find Your IH Serial Number Plate

This article provides a deep dive into using serial number tables, explains the nuances of IH numbering systems across six decades, and offers a comprehensive reference table for the most popular models.