I've had the chip on the left for some time and just picked up the chip on the right. The chip on the left is N3416 in TCR7. Both chips are in new to slightly used condition, so you cannot attribute the color differences to wear. As you can see the print on the right chip is much bolder and the color of the letters in "Golden Nugget" are gold while the color of the letters on the left chip are much paler. The same color variations also exist in Golden Nugget $1 chips from Atlantic City. I wonder if anyone can find a Laughlin chip with green colored letters, which is a very rare variety for the AC chip.