Got two of these blue chips in a lot recently; P on one side, and C on the other. Could be Poker Chip, or Poker Club, or Canadian Pacific, or Pete Carmichael. There were two colors of the circle-monogram I show here, as well as two colors of the plain inlaid monogram variety. My guess is a person's initials.

Nice odd chip anyway. One chip P/C, yours for $6, delivered.