The Farmall Cub (1947–1979) and International Cub (utility version) have their own serial tables:
Prefixes:
FCUB= Farmall Cub,IHC= International Cub loboy/utility.
International Harvester Company (IH) produced farm tractors from 1906 until 1985 (when the agricultural division was sold to Tenneco, forming Case IH). To track production, identify model year, and verify authenticity, IH used serial number plates attached to the tractor’s chassis. Serial number tables (often found in service manuals, parts catalogs, and enthusiast guides) provide the cross-reference between serial number ranges and the corresponding year of manufacture.
This report compiles the most common serial number tables for key IH tractor models built from the 1930s through the early 1980s. International Harvester Tractor Serial Number Table-
Important Note: IH did not always align serial numbers strictly with calendar years. Production years often ran from September/October of the previous year through August of the named year. Also, some models had overlapping serial ranges due to multiple assembly plants (Louisville, KY; Doncaster, UK; Geelong, Australia; Neuss, Germany).
| 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 |
Note: Exact yearly splits require sub-tables. For example, Farmall H serials: 1940 ends ~18213, 1941 ends ~54386, etc. The Farmall Cub (1947–1979) and International Cub (utility
If you own a classic International Harvester (IH) tractor—whether a letter-series Farmall, a gassy old Cub, or a burly 1066—one of the first things you’ll want to do is pin down its birthday. Fortunately, IH kept meticulous records. Below is a simplified serial number table covering the most popular models from the 1930s through the early 1980s.
Tip: The serial number is usually stamped on a flat plate or directly into the casting on the left-hand side of the clutch housing or transmission case.
Let’s walk through a practical example. You find a rusted Farmall H in a ravine. Prefixes: FCUB = Farmall Cub, IHC = International
If you own a classic piece of Red Iron, one of the first questions you’ll inevitably face is: "What year is this tractor?"
Whether you are buying a new project, ordering parts, or registering for a vintage tractor show, knowing the exact age of your machine is crucial. For International Harvester (IH) enthusiasts, the serial number is more than just a string of digits—it is the DNA of your tractor.
In this guide, we will break down how to find your serial number, how to decode it, and provide a reference table for some of the most popular IH models.
There are several possibilities: