I think what you are seeing as a blank out for 6 sets of edge inserts are some sort of shadow from a tab holder. I do show the faint shape of what looks like 3 blank outs of the base color. On my chip these same base color shapes are only on one side of the chip and no lines showing on the side edge of the chip. That is why I think it is a shadow left from a holding clip in some type of holder and not a cut out filled with the base color.

Having fun Steve