Hello,
First post here, so apologies if it has come up somewhere before - I really did try searching for it beforehand.
I've read that damage can occur to books themselves and/or signatures on books when regrading. My question is how often does something like a previously signed/graded book being submitted for another artist's signature result in a lowered grade or the previous artist's signature "coming off" the book occur? I hope this makes sense, if not I can provide some real world examples that may help. Any information, concrete or anecdotal, would be greatly appreciated. Thank you and stay safe everyone!