This is very interesting and my compliments to Jacknola and you Ron for the good work. I haven't visited with Jack in some time and hated to see him sort of back out of this forum. He always had interesting info and had been there and done that.
Ron I have a Model 11 Pinned Ivory that came in a BB sheath that I always assume was a Johnson.....the logo is a West-Facing logo. I have talked to the original owner of my knife, who was a Randall Dealer for many years, and had this knife made with Ivory that he had taken on Safari in Africa. He does not remember the date of it's production. Only that it was late 50's or early 60's. Forgot to mention that the sheath has a horizontal keeper strap.
Wish I had more for you but at this time that is my only BB.
Please give Jack my regards.