It looks like it is two different chips based on the position of the inserts on the pics of both chips. Curent chip has the purple inserts at 12 o'clock and 6 o'clock on one side and 3 and 9 on the other. Older sale had the inserts at 2 and 8 on the side shown. Interesting that both seemed to fracture in very similar positions and arcs. I wonder if a box of them were subjected to a hard impact and possibly an entire row got the chop at the same time. I would be inclined to thin that if there are two, there are probably at least a few more.