Jim

My dating "guess" is late 1950's to early 1970's based on the spacers, which I feel are burgundy, 3 thick, 2 thin.
I can not help you with the pinned butt cap. Don't recall seeing one before and I can't find any info in my notes.
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Rod Brown
RKS 3846
RKCC CM-123
Whether you think you can or can not, you are right.