I have one of these, very pre-1967. It was old when I acquired it circa 1962. I'm speculating that it dates to mid 1950's, maybe Korean War. As a dumb kid, I broke the pommel at the rat tail end. Also, I decided to "lace" the edges of the sheath with leather boot lacing. It looks like it was done by a 14 yr. old kid -- or Bubba. Eventually I replaced the broken grip with a section of elk stag, secured w/ JB Weld. I put a leather spacer between the stag and the guard, also, reshaped the guard to single rather than double.
I still have it. And have always felt bad about the abuse it has taken in my early, misguided efforts to modify and embellish an existing knife. I didn't appreciate this knife's history or pedigree until later -- Like about 1975.
Recently, like 2005, I found this same Camillus Pilot Knife, offered at the local PX -- Leather sheath is metal backed, wrapped around the tip to prevent being pierced by the blade. NEW, and I paid about $20 for it. (Eat your heart out!) Knowing the history of this reserve Army base, and its supply chain for the PX, I expect this Camillus was a stock clearance from decommissioned Army issue inventory out of Ft. Lewis / McChord AFB, WA. It was packaged in a blister pack, labeled as US Govt. Property, not for civilian sale.