oldiron29: here are some serial numbers that could help you zero in on the tractor serial number. In June of 1952 tractor serial number 149945 had engine serial number 151959, a difference of 2014. In July 1954 tractor serial number 195652 had engine serial number 204642 a difference of 8990. The tractor serial number started off at 100001 in 1951, I don"t have the beginning engine serial number but am assuming it was the same. I think it is safe to say the tractor serial number and engine serial number spread increased by slightly over 2000 each year. The Super A did the same after serial number 310300 in 1951, and that spread developed to roughly 2800 by 1954. In both cases those extra engines went for use as stationary engine use. Prior to that time, stationary engines had a separate sequence of serial numbers. Balers used some, I can remember in the 50s just about every ferris wheel, merry go round, etc. in my area was powered by a C-113 or C-123 engine. One problem I have with these figures, if amusement rides across North America used as many of those engines as in my area, there must have been another series of serial numbers. Very likely it was old engines hanging on from A, B, early SA and C days. I remember the outfit that came to our fall fair with amusement rides, they had about 6-8 of those little engines, and the guy keeping them running was grease from head to toe, and I think the same grease was on him the day they left town as the day they arrived. He was a nice old guy, but I bet he hadn"t seen a decent bed or bath since spring. I talked with him once, said his company had enough equipment to keep 4 shows on the go at same time. He said they had used other engines, however none measured up to those little IH engines. They had two extra engines with them at our fair. The day I talked with him he was putting a piston and sleeve kit in an IH engine.
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