Centering55/45 or better on the front. 60/40 or better on the back.
CornersClean and sharp corners with almost no visible wear. Tiny imperfections such as minuscule nicks & softening are present under magnification.
EdgesNear-perfect edges with no visible imperfections under normal inspection. Only the slightest signs of wear may be visible under magnification.
SurfaceExtensive damage including deep creases, heavy scratches/micro-scratches, stains, and surface residue.