Batman Adventures #12 - CGC 7.5 - 1993 - White Pages. 1st Appearance of Harley Quinn in Comics out of DC Continuity. Light creasing to cover light spine stress lines to cover moderate bends to cover. Mike Parobeck and Rick Burchett Cover and Art.The item "Batman Adventures #12 CGC 7.5 1993 1st Appearance of Harley Quinn" is in sale since Monday, August 10, 2020. This item is in the category "Collectibles\Comics\Modern Age (1992-Now)\Superhero\Batman". The seller is "titansofpop" and is located in Antioch, California. This item can be shipped to United States.