Centering55/45 or better on the front. 70/30 or better on the back.
CornersCorners are mostly sharp with very slight wear at the tips. Imperfections are barely noticeable without magnification.
EdgesClean edges with minimal wear. Minor imperfections such as nicks & light chipping are visible by the naked eye and under magnification.
SurfacePerfect surface under normal inspection. Any tiny imperfections are barely visible even under magnification.