I have been reading the treads on the Castaways $500 and $1000 Sports Book chips. I don't know if they were ever used, but I do know they were real chips in the Castaways inventory. Bill Freidman, the General Manager of the place was holding hourly drawing, giving away everything in the place including the giant sign on the building. The Sports Book chips were in an acrylic case with a bunch of other items they were drawing for and I was so dumb I asked the Lady if I could cash them in if I won one(I didn't win). She laughed and said no. Jim