Value it hard to pinpoint for higher value chips these days. It's certainly a 4-figure chip ($1000+) in my opinion. And one of the books estimates a value around $3000. But at these levels the quantity of cash buyers can be rather limited.

A chip like this one will be in an auction in about a month, and its sale in that auction should reflect current market conditions.

That was a very nice find for an estate sale purchase. Congratulations on finding it.