My underatanding of the 6" Jet Pilot history is that Marbles did the design which was accepted, and factory and Gladstone giddy with pride. Then the contratct to produce was given to Camillus which bid lower per unit, and after a lot of hard feelings, Marbles decided then and there to never bid on a govt contract ever again.

This still does not explain a grandfather owning the knife who died either before the knife produced or just at introduction. The 1958 knife was brass handled?

i am still thinking this one over. First such knives they made were tenite handled and hex butted, then leather.

They had sawteeth from very first supplied spec.

They were stamped.

Seems far easier to believe a man by the name of Most made a brass handled knife inspired by Marbles design which predated WWII and knife made perhaps for WWII itself, the owner dying in 1950s, which fits far easier and with no forcing or incredible mods to a knife which existed, unless Marbles made such a hunter back at that time.

Camillus was a major maker of Mk2 and Mk3 knives during WWII and was anything but "a small company". They plain underbid on a far cheaper rough and ready version of the highly finished Marbles product.