A signed Suicide Squad / Birds of Prey “Black Mask Club” Funko Pop figure, autographed in-person by Margot Robbie as Harley Quinn. She is quite difficult to obtain. In-Person Signature. Authentication: GA (Global Authentics) Certification: Each item includes an individual GA certificate of authenticity. Certification numbers will vary. Collector Note: Signed Funko Pop figures featuring Margot Robbie as Harley Quinn are highly desirable. Due to her limited signing appearances, authenticated in-person signatures are especially sought after by collectors of DC and superhero film memorabilia. Multiple pieces are available, all of the same high quality, and each is individually authenticated and display-ready. A standout collectible from one of the most popular characters in the DC cinematic universe.