Credit to you, sir, for being the first to see what I believe may have occurred. The coin was switched out and the holder glued back together. Now let's all take bets on the odds the seller relists it as problem-free!
That's kinda what I was wondering. I have never seen one of those old ANACS slabs look like that. A coin that obviously was graffiti details that wasnt graded properly with a questionable slab anomoly? Too many ifs for my liking.
At least they used nice cursive writing when they autographed it. In all seriousness though, that is pretty scary and a good thing to keep an eye out for. Thank you for the heads up.