I JUST RETURNED FROM LAKE TAHOE AND NOTICED THE DIFFERENT "WAFFLE LIKE" PATTERN BACK GROUND ON THE $1.00 CHIP. I BROUGHT HOME AT LEAST 8 DIFFERENT SIZES. CAESARS-LAKE TAHOE ALSO USES THE IDEA OF DIFFERENT WAFFLE SIZE PATTERN ON THEIR CHIP. DOES ANYONE KNOW HOW MANY SIZE PATTERNS?