Disney Marvel Chris Hemsworth & Natalie Portman in Thor: The Dark World 8x12 Autographed Photo Matted to 12x16 Size Disney Marvel Chris Hemsworth & Natalie Portman in Thor: The Dark World 8x12 Autographed Photo Matted to 12x16 Size Original autograph(s)  no copies or reprints Comes with Certificate of Authenticity from seller with date and place of signing Lifetime guarantee on authenticity or full refund given Comes in a protective sleeve with an acid-free backing board