Ever found your SMLE sn# in a book?!
I was looking at a book on line called British Enfield Rifles, Vol. 1, SMLE (No.1) by Charles R. Stratton, on page 135 I actually found my rifle's serial number. It appears to be either the first or last No1 MKIII before Ishapore swapped over to the No1 MkIII* production or something like that. The preview I'm looking at is not the most detailed.
https://www.milsurps.com/images/impo...101_0807-1.jpg
My wife was not joking when she said that I could find the most interesting rifle at a vendor's table or gun show.