Toning or "lack of reflectivity?" Buffalo Proof

Here's a picture and the story...
I bought this coin raw... certain that it was a lock PF 67... I sent to PCGS, graded PF 66, I resubmitted for Presidential Review... six weeks later got the results and explanation. Presidential review said PF 66 because "it is not nearly as reflective as.. proof 67's." As you will see in the photo below, the coin has what I see as a very nice light toning and flawless fields... no marks at all. Originally, I even thought it had a shot at PF 68.
After the results of the Presidential review, I sent it to NGC... results... PF 67.
My question is "does light toning on a proof detract from grade and hide the "reflectivity?" (If so, all of us with high grade toned 19th century silver proofs have been had!!)
Opinions... does this coin lack the "reflectivity" to be graded PF 67?

I bought this coin raw... certain that it was a lock PF 67... I sent to PCGS, graded PF 66, I resubmitted for Presidential Review... six weeks later got the results and explanation. Presidential review said PF 66 because "it is not nearly as reflective as.. proof 67's." As you will see in the photo below, the coin has what I see as a very nice light toning and flawless fields... no marks at all. Originally, I even thought it had a shot at PF 68.
After the results of the Presidential review, I sent it to NGC... results... PF 67.
My question is "does light toning on a proof detract from grade and hide the "reflectivity?" (If so, all of us with high grade toned 19th century silver proofs have been had!!)
Opinions... does this coin lack the "reflectivity" to be graded PF 67?
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Comments
<< <i>My question is "does light toning on a proof detract from grade and hide the "reflectivity?" (If so, all of us with high grade toned 19th century silver proofs have been had!!) >>
I collect 19th century proof, and my answer is no. I will say that I believe PCGS has a bias against medium to heavily toned proofs. Whether it's market grading or the heavier toning hiding reflectivity as their reason I'm not sure, but my guess is that its the former, based on presidential reviews I have submitted.
<< <i>Opinions... does this coin lack the "reflectivity" to be graded PF 67? >>
Grading your picture, and not the coin, it looks like the coin might have a hazy toning over it, and if so, you won't get the extra point from PCGS.