Happened to me at a Indian casino in Northern Michigan. I pocketed two roulette chips and then went over and played slots for about a half hour. Got ready to leave, went to the bathroom and when I came out of the bathroom two security cops confrounded me about taking roulette chips. I admitted it and they ushered me back to the table and I had to explain to the pit boss why I took them in front of all the other gamblers with a security cop on each side of me. When I explained I was a chip collector, he shock his head, took the chips and had the roulette dealer refund my $.50 ($.25 table). Kinda embarrassing.