Centering55/45 or better on the front. 60/40 or better on the back.
CornersLight to moderate wear on corners. Slight rounding & minor chipping is visible under inspection. Corners still retain their overall sharpness with some imperfections.
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.