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.
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