Centering55/45 or better on the front. 60/40 or better on the back.
CornersCorners are mostly sharp with very slight wear at the tips. Imperfections are barely noticeable without magnification.
EdgesEdges have almost no signs of fraying, chipping, and nicks. Under magnification, multiple flaws are visible, but not significant.
SurfacePerfect surface under normal inspection. Any tiny imperfections are barely visible even under magnification.