I have 3 chips that I picked up personnally from Billy Bob's Texas in Fort Worth , TX in the mid 1980's. It was a casino fun night. The chips are identical except for color, I have a red, white and blue. H&C mold with the same center insert on each chip, no denomination. The center insert is white and has a map of Texas. In very small print in the panhandle is written "Billy Bob's Texas". Anybody know anything about these chips?