International Harvester Tractor Serial Number Table- Link Jun 2026

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.

Note: The famous is the most collected. Serial numbers 501 to 5,000 (1971) are considered early "blue ribbon" tractors. Numbers above 50,000 are 1975-1976 models. International Harvester Tractor Serial Number Table-