Most of the casino, for the American roulette, use standard generic chips.(with a star, shell, or whatever sign on it but NO CASINO name)
A while back I found a bunch of them, they where offerd to me, but I am never shure they really where in play as NOTHING on the chip refers to the (even a) casino.
So the roulette harversters have NOT much work here in Europe...
Take care and kind regards,
Bob R-4479 Belgium