The MMW book is squarebound, right? If so, squarebound books have covers glued on, so it's normal for a squarebound multiple cover book not to have it's extra covers glued on.
I have a Marvel Triple Action #1 (squarebound) with it's second cover not attached.
Yeah, it is squarebound and I knew they were just glued on. I just wasn't sure if CGC would slab something like that or not. For all they know, I could have just removed the cover from another copy and stuck it with that one.
Yes CGC will Slab it I have a squarebound ASM #200 with a loose outer cover. (thumbs u
You can tell if that cover belonges with that book by lining up the edges of the inner and outter covers and looking at the edges real close if it belonges all the tiny imperfections of the cut edges will match up on both covers.