Almost every one of my points is illustrated in the above chip.

Note that the ring and colored rim are perfectly centered. Note the leaves are carved using the outside ring as a base to start from. Note in the leaves that lines start blunt and end in a fine point. Note the darkness in the center of the chip where the nerve resides and the circlular pattern of the schreger lines (visible at 10:00 o'clock position). Note that the 3 ticks located between the leaves is not the same going around the chip (another indication that carving was done by a human) Note the coloring differs radically from the ebay chip. Note also the wear pattern (opposite sides are worn indicating a slight warp --- an expected result)

All in all, this is a legit chip!