This oversize red PMSC advertising chip was made for an unknown customer. Maybe you can figure out the B,P,R,O letter combinations; I couldn't. Reverse has a plain brass center with no design so might have been intended as a presentation piece with something engraved on it. 1 5/8" diameter chip. Unused, of course. Made by Reliable Engraving in CA.

Yours for $25 delivered in USA.