A signed Funko Pop figure, autographed in-person by Kirk Hammett (guitar) of the band Metallica. In-Person Signature. Authentication: GA (Global Authentics) Certification Number: GV922302 Collector Note: Signed Funko Pop figures featuring Kirk Hammett are highly desirable, representing the legendary lead guitarist of Metallica, one of heavy metal’s most influential bands. Authenticated in-person signed collectibles are sought after by collectors of classic metal and music memorabilia. A display-ready, standout collectible from a true metal icon.