Steve, I have a tin CS primer dug in Poisson Springs, Arkansas, but it is a different pattern. Yours looks modeled after the British ' Armstrong" style, with the pull ring. Mine is in style is a dead ringer for the ancient quill style with the cup on top that held the mealed powder. I have seen a few in this style made of brass, but not tin.
I find friction primers very interesting, there are so many variations and 'types', I have a whole large riker case of them, but not one like yours.... wanna trade something ??
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