Don,
In my 15th edition of the Chip Rack they have a value of "W+" ($500 - $599) for the chip you pictured (V8996),
which suggests there must have been at least one that must have sold that they based that value on.

With my chip (TCR# E1022) they have no value attached because of a lack of any known sales, due to its extreme rarity.

Both chips are Rare, to be sure.

I don't mind keeping my chip if I don't receive any fair offers, and if so, maybe I'll try getting yours (pictured) at Doug's auction next year.

It would be rather nice to have both. Thanks for your input.