Allow me to backtrack a bit: I "think" it's a Moore! I didn't keep any other pic of the backside of the sheath. I'm going to have to check with a guy and I'll get back to you guys.

Dale: For sure a "7" (Both 3's & 4's still had a bit of an upsweep during that era.

Best,
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Ron Mathews
RKS No. 4223