International Harvester Tractor Serial Number Table- Access

Never trust painted-over tags. Use a wire brush or a piece of chalk to gently reveal the stamped digits. If the tag is missing, look for stamped numbers on the engine block—though note that engines were sometimes replaced, making chassis numbers the gold standard.

For tractors built after the late 1960s, IH adopted a structured system to provide more detail than just a sequence number. International Harvester Tractor Serial Number Table-

produced in 1939 (the first year) would have a serial number starting at 501. Never trust painted-over tags

Most early tractors use a simple 5-digit number that indicates the unit's place in the production run. For example, a For tractors built after the late 1960s, IH

Serial number ranges vary significantly across models. For many early-to-mid 20th-century models, the serial number "501" frequently designated the first unit built in the first year of production. Starting Serial Number Case Model 10-18 Case Model 10-20 Farmall A, B, BN Farmall Cub Farmall 140 International 384 How to Decode IH Serial Number Tags

| 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 |