Offered is a Michael J. Fox Signed “Back To The Future” Marty In Puffy Vest Funko Pop #961. Michael Fox’s autograph on the Funko Pop has been authenticated by Beckett Authentication Services (BAS) Witness and includes their Tamper-proof QR coded hologram. We participated in a private autograph signing with Mr. Fox in the Summer of 2021 to obtain this hand signed piece of memorabilia. Please view our other listings for more Back to the Future hand signed items. Beckett Witness Certification means that a representative from Beckett Authentication Services was there to witness the autograph being signed, and therefore, guarantees it is 100% authentic.