There are these hard plastic chips used in Europe, they are called Jetons (it has nothing to do with the inlay) The square chips (made of same material I believe) are called plaques, but there are much more knowledgeable persons than I.

If you are thinking of selling it, I may be interested (the reason I presume is obvious), but I have no idea what it is worth, and it may be more than my budget could justify. But if it not, I would be interested.