Nice coin, but it feels a bit overgraded to me. I like it best 10 points under what the label says. These old white ANACS slabs typically overgraded early US, from my experience.
Admittedly, I'd place it as being 5 points overgraded, myself, but not so much that I'd really disagree with the labeled grade. Regardless, it was a nice grey coin.
I believe this small white slab was a later generation. Notice that the serial number has 7 digits. Most of the earlier ones (post ANA slabs) had 2 letters followed by 4 numbers or 6 numbers. So the grading likely became a bit more loose. However, I still like the coin even if it is a grade too high.