Won a chip in an auction group and cant identify it. Orange plastic, 34mm diameter (slightly larger than half dollar). Has an inlaid 'C' and 'M' interwoven, and inside a diamond shape frame on one side, an '20' on the reverse, inside a similar, square frame. Came in an envelop with '1930 Monte Carlo Chip' handwritten. Any info greatly appreciated. Thanks in advance, Scott

Posted pics on Poker Chip Forum site but cant seem to figure out how to do it here.