Centering55/45 or better on the front. 70/30 or better on the back.
CornersClean corners with minor visible wear & softening. Tiny nicks are visible upon close inspection and more noticeable under magnification.
EdgesLight edge damage with only minor signs of wear. Small nicks & very light chipping present but are not very noticeable to the naked eye.
SurfaceExtensive damage including deep creases, heavy scratches/micro-scratches, stains, and surface residue.