Centering55/45 or better on the front. 60/40 or better on the back.
CornersClean corners with minor visible wear & softening. Tiny nicks are visible upon close inspection and more noticeable under magnification.
EdgesEdges have almost no signs of fraying, chipping, and nicks. Under magnification, multiple flaws are visible, but not significant.
SurfaceVery clean surface with no visible scratches or marks under normal inspection. Only tiny imperfections visible under magnification.