I picked up a variation of a common Maralboro ad chip. I shot them side by side. The chip on the left has a taller, more slender type style. The recessed area in the middle is smaller. All of the design seems to be sharper and impressed deeper into the chip on the left hand one. Also , the size of the diamonds/squares around the edge seem to be just a nick smaller with a little space between them on the left chip. On the right hand chip the diamonds appear to be nuts to butts all around the chip. This could be an optical illusion because it's not molded as sharply.