Centering55/45 or better on the front. 70/30 or better on the back.
CornersClean and sharp corners with almost no visible wear. Tiny imperfections such as minuscule nicks & softening are present under magnification.
EdgesPerfect edges under normal inspection. Any tiny imperfections are barely visible under close magnification. Edges are sharp and clean.
SurfaceVery clean surface with no visible scratches or marks under normal inspection. Only tiny imperfections visible under magnification.