Centering70/30 or better on the front. 85/15 or better on the back.
CornersMinimal rounding with only light signs of handling. Light chipping & minor nicks present on corners. Corners maintain most of their original sharpness.
EdgesClean edges with minimal wear. Minor imperfections such as nicks & light chipping are visible by the naked eye and under magnification.
SurfaceVery clean surface with no visible scratches or marks under normal inspection. Only tiny imperfections visible under magnification.