This sketch variant cover was sold exclusively at the 2014 San Diego Comic-Con. This copy is signed  (at the 2014 San Diego convention itself) by Amanda Conner (co-writer, artist and cover artist of this issue), Jimmy Palmiotti (co-writer of this issue), Bruce Timm (co-creator of Harley Quinn and who also appears in the comic as himself), and Jim Lee (who also appears in the comic as himself). Please note- the signatures are real. They are the actual, hand-signed signatures of Conner, Palmiotti, Timm, and Lee. They are not pre-printed images on the comic.

About the issue: 

The title says it all as the fan-favorite Harley Quinn takes on Comic-Con International itself in her quest to get her own comic published.  In this humorous and over-the-top romp through the very real challenges of attending Comic-Con, Harley has to battle long lines, crazy crowds, costume-clad fans, and the dread con crud as she meets real-life comic creators like Jim Lee and Bruce Timm.  If you’ve ever attended the con you’ll recognize much that is familiar as Harley charges through downtown and the convention center sampling all the San Diego Comic-Con International has to offer!