Good luck finding one. I've been keeping my eyes out for a 64-D for a few months and not finding any available to be had. Prices are starting to go through the roof.
Well, with the 64d Carr Morgan coming out, and being such a surprise, it had the added effect of raising interest in the 64d Peace dollars.
Robec: Really Nice Santinidollar: the placement of the Mint Mark does that tell you if you have a Mr Carr specimen...????
We know that will never happen. If one ever was found to exist its value would be multiples of $10k, although it would have to be sold clandestinely.
I did a quick look at Die #6 and there is a die chip or gouge to the right of D. It's a little harder to see on the Matte finish, but in hand it is easily seen. Die #6 High Grade Die #6 Proof Like Matte Proof finish