The chip is most definitely ivory and is most definitely not IE-WO (as I have IE-WO).

For a positve ID contact Kenny Craig. I would give odds that Kenny has that chip.

I believe that Kelly is Lee Wandler's wife. Lee is a very big buyer on ebay of racks of chips. If I had to guess, I would say there are many more of those ivories in the Wandler home. Because Lee has so many racks, your particular ivory won't be on ebay again for several months