The first thing that caught my eye in your first pic was the shape of the choil. That is very non-typical for the period. I am not sure I have seen another like it. Joe or Ron may have some examples.
Sorry for the late post, Tune / Boomer. That long shallow choil (Sometimes with a sharp radii) was seen in some knives that were circa 1960. Here are pics of a few more:
There may have been one grinding guy with his own idea of what a choil should look like.
Best,
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Ron Mathews RKS No. 4223