In Reply to: Weird Serial Number posted by Robin on August 10, 2021 at 15:51:19:
It sounds like you may have a 9BNB Industrial engine block and it may have been swapped out with another 9N/2N. Do you have a 3-point lift? If so then your tractor isnít a 9NBN Industrial as that was a focal point of the Industrial. No other parts were different than on a standard 9N. There is a brochure in the manuals forum here or click on the link below. The check mark Ā„ you see is most likely a partial star ✩ symbol that was used in the prefix and suffix of the serial number til 1950. Serial numbers were hand stamped by a human and many are often done weakly. You say, ďÖ This is the original block for this tractor which has been replaced because of a crack all the way down the side of the block�. Confusing. Do you mean that this engine block was swapped out with your original? That would explain it better and many N blocks were swapped out when original was destroyed. Other than that I wouldnít put much into a serial number anyway. Know that you have bragging rights to a 9NBN block and worry about the important factors like if 6V or 12V, and if the wiring is correct for whichever set up you have. All 9N and 2N models were wired the basically the same after 1940 with only the generator being changed a few times.