I use the overstreet system but no CGC grade is guaranteed. See my scans of front and back covers. "Tracking info says it was delivered last year in a different zip code".
I use bag a board , book is wraped in bubble between two tick card boards , then is placed inside a box. The item "Adam Legend of the Blue Marvel #1 CGC 9.8 White Pages Marvel Comics" is in sale since Sunday, August 16, 2020.
This item is in the category "Collectibles\Comics\Modern Age (1992-Now)\Superhero\Other Modern Age Superheroes". The seller is "comicscauldron" and is located in Distrito Federal, Mexico D. This item can be shipped to United States, Canada.