Centering70/30 or better on the front. 85/15 or better on the back.
CornersModerate wear on corners, with fraying & chipping. Noticeable by the naked eye and more pronounced under magnification.
EdgesModerate wear along edges with moderate chipping/tiny nicks. Some fraying is visible, but the edges remain mostly intact.
SurfaceMinor scratches or surface marks. Tiny stains or slight discoloration may be visible but do not significantly impact the appearance.