What grade is this case? (B8)

1401524-2a-347-10x-1024x1024 1401524-2a-347-10x2-1024x1024 1401524-2a-347-20x-1024x1024 1401524-2a-347-20x2-1024x1024 1401524-2a-347-20x4-1024x1024