You would be surprised to find what people will try to pass as a real chip - and what gets by the dealer! I managed to buy from a cage a Grand Casino Biloxi dark red $2.50 Chipco( that is the rare one). I got the chip in Tunica. Not only was the chip from the wrong end of the state but it had the Chipco label on the back side. Oh I forgot to mention - it was also notched! And this chip made it by the dealer at one of the tables.