It's not the toning or eye appeal that holds the grade down here (both are nice). Just being a 38-D likely plays a role (as these come nice). From your photo, I interpret that the luster is ok. The strike is thus the only thing that I believe holds it down a bit.
The strike holds it back. The toning is wonderful but combined with the strike, it adds to hide the details of the strike.
Before I can vote on: "What keeps this coin from a higher grade?" What's it graded now? I see several things that can cause the coin to be any grade from AU-58 to MS-64 to "details."
Okay, if you're going to argue about it, I'll take it, gee-whiz. Issues yes but overall, a very nice IHC. Go put it on the freeway headed West I'll find it thanks.
@Pickin and Grinin I do like the color; even the few areas where the subdued nickel-grey tones are on the Obverse do not--IMO--detract from the overall impression. As to the grade, I'm not going to guess at what it was graded, but I will say that the strike and Rim integrity is substandard for the issue.
No familiarity w/ the series. I think it's very attractive and am guessing it's full of luster. Believe I am seeing what's called question to the rim, but am going to assume this is more to do w/ extremely magnified photos / angles / slab design etc... My guess is 66.
Sorry guys my internet was spotty at best yesterday. My internet is in and out since the time change.