Here is what NGC said about these no grade slabs:
On occasion we have offer adjectival grading at a submitter's request. This can sometimes be a more cost effective certification, or it can assure the submitter a higher quantity of coins of uniform grade (as in this case, where coins grading MS65 or better have all been encapsulated as "Gem Uncirculated" "Brilliant Uncirculated" is a grade, which corresponds to a grade of MS60 to MS62 on the numerical scale"). Whether graded numerically or adjectivally, the NGC written guarantee applies.
This is 2 different posts joined together to better answer the question
Edited by Bryan1315
08/22/2007 8:53 pm