I have this $25 chip from the closed Southern Belle Casino that was in Tunica (River Bend) Ms. This chip in in MINT condition, and has not been cancelled at anytime. I showed this chip to Greg at the Tunica show and he told me the chip has never been cancelled or had a cancellation removed. This is the chip that has shown up many times cancelled. The cancelled chips are used at Harrah's as training chips. It is also shown on the Chipguide , http://www.chipguide.com/mirisb.htm ,as a backup chip. Does this mean this chip was put into use at some point while the casino was open? Is there any idea how many uncancelled $25 backup chips are out there? Thanks!