Centering60/40 or better on the front. 80/20 or better on the back.
CornersModerate wear on corners, with fraying & chipping. Noticeable by the naked eye and more pronounced under magnification.
EdgesLight to moderate wear along the edges. Chipping & nicks are visible upon inspection, but edges are still generally clean with light to moderate wear.
SurfaceHeavy wear with visible scratches, surface scuffing, and minor creases. Staining & discoloration is evident.