Up for sale is a professionally graded & certified comic book. JUSTICE LEAGUE OF AMERICA #1 DIAMOND RETAILER INCENTIVE EDITION (RRP). GRADING COMPANY: Certified Guaranty Company, LLC (CGC). GRADING SCALE: 1 - 10. (10 = Gem Mint, 9.9 = Mint, 9.8 = NM/MT, 9.6 = NM+, 9.4 = NM, 9.2 = NM-, 9.0 = VF/NM).For the complete CGC grading scale, please visit CGC Comics' website. GRADE: 9.6 = NM+. COVER ART: Ed Benes & Mariah Benes. ARTIST: Ed Benes, Sandra Hope & Mariah Benes. Sideways composite of both Ed Benes covers. Check out my other items. And be sure to add me to your favorites list. Thank you for your interest! I have been collecting comics for more than 25 years and counting... All sales are final on CGC, PGX and CBCS professionally graded & certified comic books/magazines. The item "CGC 9.6 JUSTICE LEAGUE OF AMERICA #1 RETAILER INCENTIVE EDITION (1500) RRP 2006" is in sale since Wednesday, May 10, 2017. This item is in the category "Collectibles\Comics\Modern Age (1992-Now)\Superhero\Justice League of America". The seller is "china-man" and is located in Washington, D. This item can be shipped to United States, Canada.