Centering55/45 or better on the front. 70/30 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.
EdgesPerfect edges under normal inspection. Any tiny imperfections are barely visible under close magnification. Edges are sharp and clean.
SurfaceAbsolutely perfect surface with no flaws, scratches, or marks. The surface is pristine under all forms of inspection.