... at Bogata there is/was a numbered sticker on each chip. Due to limited seating for spectators, prior to the video taping of the WPT final table, one chip is given to each person in line. If your number is drawn you get a seat to watch the final table. They've done this for each the past several years and these chips were not for sale in the gift shop.

Link for Borgata chips is below.

http://all-chips.com/Chips.cfm?LocationID=3&CasinoID=28