Isn't 1(mc) redundant?

[CardTarget]

It's like kicking that poor card when it's already down. I've always thought the qualifiers meant "This card would receive an 8 if it weren't for this terrible centering", thus 8(oc).

[travrosty]

probably but they are just trying to be consistent with the nomenclature they use for all of the other number grades.

[scooter729]

In PSA set registry weightings, the 1MC will get the same weight as a regular PSA 1; you can't get less than a PSA 1 (except Authentic, which I believe counts as 0.5 in the weightings).