Since many parts between Farmall Regulars and Farmall F-20's are easily interchangeable, the absolute best way to tell the difference is by serial numbers. Farmall Regulars used QC as the prefix until Oct 1926 when IHC moved production from Tractor Works in Chicago to Farmall Works in Moline. T was then used. Even after the move all engine blocks continued to used the QC prefix. The left frame rail wasn't stamped with a serial number until early 1927 which was located just behind the radiator and only for a short period of time. It was then moved aft near the clutch housing. All Regulars had a tag mounted on the tool box using 2 rivets. And this continued onto the F-20 until the end of 1932 when 4 rivets were then used to secure the tag. Tractor identification on the serial tag also changed at the same time. I believe IHC made effort to make sure serial numbers matched. It is hard to find tractors without matching numbers, but they exist. Casting codes started on the Farmall F-30 in 1931 and no Regular has them.
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Today's Featured Article - A Lifetime of David Brown - by Samuel Kennedy. I was born in 1950 and reared on my family’s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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