This is a Variant cover of All Star Superman #1 by Neal Adams. A rare book to begin with. Making this even rarer is the fact that this book is one of Neal's own artist proof editions, meaning, one of the copies Neal is comped for doing the cover. Signature Series means that the book was signed by Neal before it was graded and placed into the CGC case. This is a very rare collectable. CGC Grade 9.6
