I remember going to the Mirage to hunt down some of those "POKER" variations. I was able to buy one or two of the regular variety but the casino Pit Boss, or whatever his title was, refused to sell my anything further. Seems they knew about the variations by then and collectors from everywhere had descended on the Poker Room and made their life miserable. I had the impression that the casino had gone through their entire stock of chips and removed any errors that were found. Anyway, it seems your question has been answered by now about this spectacular error. I don't know how many error chips turned up, but good luck in finding one for your collection.