Centering55/45 or better on the front. 70/30 or better on the back.
CornersModerate wear on corners, with fraying & chipping. Noticeable by the naked eye and more pronounced under magnification.
EdgesModerate imperfections such as nicks & light chipping. Edges show wear & fraying but are generally clean and intact.
SurfaceMajor scratches, heavy scuffing, significant staining or discoloration. Visible surface damage such as light tears & abrasions.