Combat grade means that the blade is coated. Only the LE knives are numbered and not all Busse-kin LEs are numbered. Yes, the Yard Keeper is Sr-77 steel.
Hey buddy, yea I was the starter of that thread and the DAWGS came through and answered all questions. You are right, it is a nice nice piece. I wish it were a tad bit thicker like the Dumpter Mutt but hey, it is what it is. A GREAT KNIFE!!!