[jchcollins]

I did find what I was looking for in an old version of the Beckett site using the Wayback Machine, LOL. This is from 2004:

Excellent 5

Centering: 75/25 both ways or better on front. 95/5 or better on back. Slight diamond cutting is allowed.

Corners: Four fuzzy corners, a touch of notching or a minor ding is allowed.

Edges: Noticeable roughness - but no layering. Very slight notching or noticeable chipping is allowed.

Surface: Noticeable print spots. Minor color or focus imperfections. Minor border discoloration. Minor wax stains or very light ink mark. Some gloss lost from surface with minor scratches, but devoid of scuffing.

Very Good/Excellent - 4

Centering: 80/20 both ways or better on front. 100/0 or better on back. Moderate diamond cutting is allowed.

Corners: Slight notching or layering, or moderate dings are allowed.

Edges: Readily chipped or notched and/or slightly layered.

Surface: Heavy print spots. Hairline creases. Moderate color or focus imperfections. Moderate border discoloration. Moderate wax stains. Very light ink mark or tape stain. A good deal of gloss lost from surface. Very minor scuffing or an extremely subtle tear in the form of a touch of broken surface paper.

..........and so on and so forth.