Thanks to the advice on the board several weeks ago, I walked straight up to the Luxor cage and said I would like to go through their $1 chips to look for the symbols, but I would have to take the chips to my room to do so. They promptly sold me two racks of chips, one (current) from the drawer and one old one from the main bank. Good result - found about 30 with symbols on. Only bothered to return the extras at the end of the week and they were more concerened about their plastic racks than the chips!!