Full Cover ORIGINAL artwork of the awesome villain EL DIABLO, hand. Signed by the LEGENDARY GABRIELE DELL’OTTO. CGC 9.8 (DC Comics). This piece is full of detail. Take this piece from the master home, and make it the centerpiece of your collection. Part of CGC’s Signature Series, this piece is graded and authenticated by the best in the business. All Auctions must be paid within 3 days.