Centering55/45 or better on the front. 60/40 or better on the back.
CornersRounding & mild wear on corners. Mild imperfections & nicks are visible by the naked eye. Some softness at the tips but no significant damage.
EdgesClean edges with minimal wear. Minor imperfections such as nicks & light chipping are visible by the naked eye and under magnification.
SurfaceExtensive damage including deep creases, heavy scratches/micro-scratches, stains, and surface residue.