This Autographed 1980 SW Empire Strikes Back #11 Auto Graded Gem Mint 10! Card with the inscription of "Boba's Voice & Boba Fett" has been Personally Signed by Jeremy Bulloch, Jason Wingreen & Sandy Dhuyvetter of Star Wars. This item is 100% Authentic, it comes slabbed and authenticated by Beckett Authentication Services. The authenticity can be verified on Beckett Authentication Services website.