Pretty good leap, Ron. All "possible"...but is it anymore or less possible than the simple expanation that...Just because a blade seems to have a "pre-62" grind...doesn't mean it was "completed" pre-'62...especially an oddball (fairly, compared to 6,7 or 8") 5 inch stiletto. Quite possible this knife was ordered during the Johnson era and an already forged blade, left in the bin (many times 50 were forged at a time) was pulled to fill the order??? Just sayin'. I don't remember the Randall shop doing a lot of sheath stamping??
Best, Capt. Chris