3rd however last revision date is 2005. but the newest price guide available. some one say the bible, there is one that covers Nevada only, Chip Rack I believe (if not some one on the board will correct me) however prices are listed in code, i.e. a equals a certain price, b, c, d. etc. Now if Greg ever update is River boat guide it would be the bible on riverboat chips. last revised 2001, needs alot of revision particular for Mississippi and Lousiana due to Katrina with the amount of chips now available that were not available before, just my opinion.