Centering60/40 or better on the front. 80/20 or better on the back.
CornersCorners are mostly sharp with very slight wear at the tips. Imperfections are barely noticeable without magnification.
EdgesPerfect edges under normal inspection. Any tiny imperfections are barely visible under close magnification. Edges are sharp and clean.
SurfaceVery clean surface with only the slightest signs of wear. Light scratches, tiny marks, & print lines are visible under close inspection.