One thing no one has taken into consideration relative to the light stamp of the 1 and 6, is the proximity to the butterfly stitching. This would stand to reason considering you could cut the stitching with a swift hammer strike on the die.

Why it was stamped there I have no idea. I have to defer to the Randall shop examination that it was stamped as I have not seen this piece in hand as have Wally, Chris, Michael, Scott, et. al.

Actually, upon further inspection, the stamp on the Westmorland sheath, a Johnson, closely resembles the HKL from Bills's post, albeit sloppy and/or light plus wear. Look at the 6, bingo! Perhaps that is a typical look for a 6 in a serif font.