Robert,
Good idea about the black light, but, I only have the error chip at this point. I have been using the valet at Caesars & walking over to Paris & since that is what I did today I cashed in the regular $1,000 chip. I did just get done checking the error chip with the black light & it has "Caesars Palace" (line after line) show up along with a single H&C. Those are the same things that show up on the $5 Caesars Palace regular $5 house chip & error chip (I also checked both of those now too). Andy - Las Vegas