I am honestly too scared to touch it. It hasn't left its plastic holder since at least the 1980s, and I don't want to risk damaging it. If everything else is assumed to be perfect within the book, what might the best case grade be given those white horizontal lines on the binding? I'm trying to decide if it may be worthwhile to send in for screening and/or pressing and/or grading. I'm also trying to guestimate how expensive of an error it was to let my wife pinch the binding and cause that crease!