Rich, I collect inlaid letters, especially different letters on each side of the chip. I already have a C/W chip From what I can tell in your photo they don't look like normal inlaid chips. The letters look black and not the same color as the rim. Do the letters look painted on? I collect odd stuff like that. In any case there are no codes for inlaid chips with different letters on each side. I have 90 chips with multiple letters .