Just FYI - I saw a double-cover for Raphael before that I could almost guarantee that the seller had "created." The inside staples were bent upwards slightly and the trim around the edges of the top cover didn't match the trim on the inside cover. Additionally, the inside cover had minor scratches / wear on it...which is odd given that it should have been protected by the outer cover. Anyway, be wary on your search for doubles... there are shysters out there!
Oh, and BTW, beautiful book !! 9.8 is hard to come by even without double cover. Never seen one for this issue but it sure is cool.