That's an interesting knife for sure. Something that hasn't been mentioned is how the OK tang stamp is on a #44 Queen knife. It had to be from the period when Ontario Knife Company was owned by Queen beginning in 1967 according to the Queen History notes.
I haven't seen where the Primble shield ties in , yet.
I have an Old Hickory 2 blade folding hunter, the blade is etched ONTARIO 611, the tang stamp is stamped OK, just like the OP knife, but it is a Queen #39 just with different handles and stamp. Kinda like GMC and Chevy trucks used to be years ago, same truck just a different hood ornament basically.
It is not only an interesting combination but as everyone has said it is real "looker"!