Here is a vintage Ka-Bar Knife with a date of 1951 on both the knife and sheath. It mentions Weewauntchu Lodge which was up on the border of Wisconsin and Upper Michigan in Thousand Lakes, WI. The blade looks to never have been sharpened, it does have a couple of rust spots, one above the Ka-Bar name and one just below it. The knife was originally given to Mary from El and Ketch.