This $25 ivory chip is Seymour coded IP-PE. It is one of the largest $25 ivory chips (the clay chip is shown for size comparison).

I have one one of the IP-PEs available. The chip sold a couple of years ago for $525. My price is LESS. Also, looking to trade.

Email me if you are looking for possible the finest (top 3, at least) $25 ivory chip known.