Just commenting to see the reveal. But the reverse has some marks that I think knocked it below gem. But, those could be something else entirely because, as said before, lighting on coins can hide lots of things. But, I am terrible at grading mint state coins generally.
A lot of good guesses and 2 were right, I had thought it would get a 65 or maybe if I was lucky a 66, but it came back a PR67, the best grade out of the order.
Having shopped for these coins at the FUN show, I'd say the slab grade is PR-67. This has attractive toning, but it's also got some spots. In the old days, spots mattered, but they don't seem to now. In the old days very cloudy toning on silver Proof coins mattered too. Now it doesn't. I saw some some pieces that were totally dulled out with the film that forms on the 1936-42 Proof coins from the mint sleeves in which the coins were shipped and stored. That didn't stop the grading services from giving those coins PR-66 and 67 grades.
When I built a proof registry Jefferson set a number of years ago, I avoided the dull 38-42 proofs that were in 66-67 slabs. Some could care less about the coin if it had a 66-67 grade. But I'd rather have a lustrous 65 than a dull higher graded proof.
All in all it was a pretty good deal, paid $700 for the set and just under $200 for shipping, insuring and grading.