Welcome to Tribeca Signatures NYC. We travel the globe to attend events, movie screenings, film festivals, concerts, private autograph signings and various other events to be able to provide our customers the best autographs for their collections. Every single item comes with a Certificate of Authenticity from either Beckett Authentication, PSA DNA, JSA or Tribeca Signatures NYC. Signature(s): Michael J Fox and Christopher Lloyd. Item Description: Professionally Printed Photograph.Location of Signing: Private NYC Screening (Specific details available, upon request).