Just a few Gleaner facts here. (I know this is the Deere broad.) The Model (letters) was the order in which the Combine was introduced. Starting with the Model A, Model B (rice model),"C", "E", "F" "G", "K", "l", "M", "N", "R". Henry Ford used the same system with car Models. Anyway, comparing Gleaners to Deere I would size them like this: Gleaner "E" - Deere "45"