There is so much that could be hiding in those pictures (as good as they are). Proofs are impossible to grade from pics. I really like that coin, though! I'd call it a 62CAM.
It's just the image making it look cam. Don't laugh but this the image I bought it from. Great color at the right angle of lighting. It got a 64.
I was going to guess 63 no cam, but you have already posted it. I have no problems with the 64 grade.