Alright I got the hint. PNW= Pacific North West, EEJ= equal end jack, snco-= Senior/Staff Non comissioned Officers, CSM= Command Sergeant Major.
What I see these older folks carry is an EEJ 4.5" one is a Chapman, the owner caller it a "hunter-trapper". In the 30's-60's it was THE knife to carry. What made this unusual is the steel is Sheffield (with the markings), however it was assembled in the US. The spey has "for flesh only" and all 3 joints have "oil the joint" stamped onto them. They came in 2 sizes 3", and 4.5".
Very practical configuration, if you think about it. Plus it's nifty looking.
The owner said folks carried a scout if they were a scout, or if they couldn't afford this knife. A scout in the 60's ran around $.50-$3.00, the EEJ was about $12. In fact he said scouts were beater knives. Kind of funny since they had wood scales.