I was playing at Harrah's AC earlier this year and as luck would have it, I walked away from a table with several $500 chips. While at the table, the dealer and pit supervisor told me that someone did a smash and grab of $500 chips earlier that morning, and they were going to take all the $500s out of play. When I went to cash in, they asked for my drivers license to photocopy. I didn't feel like arguing, provided it, then they cashed me out.