Centering60/40 or better on the front. 80/20 or better on the back.
CornersPerfect corners with no signs of wear, nicks, or softening. The corners appear flawless under all forms of inspection and are as sharp as possible.
EdgesNear-perfect edges with no visible imperfections under normal inspection. Only the slightest signs of wear may be visible under magnification.
SurfacePerfect surface under normal inspection. Any tiny imperfections are barely visible even under magnification.