Wow, this is a gorgeous book. And unlike many Silver Age 9.6s, it look like it actually deserves the grade.
I think it's funny how CGC denies there is a "grading curve" for older books, when the evidence is so obvious and most collectors admit that the curve is "part of the game."
I have modern books I thought might be 9.6 or 9.8s with perfect corners, perfect spines and no visible flaws, yet they came back 9.4. I consistently see Bronze, Silver and Gold 9.4s or better with visible corner scuffs, spine creases, color loss and soft corners. If anyone really believes there isn't a curve, I have a bridge to sell you in Brooklyn.