CGC uses a 10-point grading scale to evaluate posters. Below are CGC's grading standards for each numeric grade scale.
Grading Scale
Gem Mint - 10.0 - The highest grade assigned. The collectible must have no evidence of any manufacturing or handling defects. Mint - 9.9 - The collectible is nearly indistinguishable from a 10.0 but will have a very minor manufacturing defect. It will not have any evidence of handling defects. NM/M 9.8 - A nearly perfect collectible with negligible handling or manufacturing defects. NM+ - 9.6 - A very well-preserved collectible with several minor manufacturing or handling defects. NM - 9.4 - A very well-preserved collectible with minor wear and small manufacturing or handling defects. NM- - 9.2 - A very well-preserved collectible with some wear and small manufacturing or handling defects. VF/NM - 9.0 - A very well-preserved collectible with good eye appeal. Could have minor handling and/or manufacturing defects. VF+ - 8.5 - An attractive collectible with a moderate defect or a number of small defects. VF - 8.0 - An attractive collectible with a moderate defect or an accumulation of small defects. VF- - 7.5 - An above-average collectible with a moderate defect or an accumulation of small defects. FN/VF - 7.0 - An above-average collectible with a major defect or an accumulation of small defects.