This is an extremely rare Funko Pop set signed by the 3 main characters of the Back to the Future Franchise.
961 - Marty in Puffy Vest - Signed by Michael J. Fox
50 - Dr. Emmett Brown - Signed by Christopher Lloyd (Included "Doc" inscription)
963 - Biff Tannen - Signed by Thomas F. Wilson
All 3 signatures come authenticated (Fox and Wilson are authenticated by JSA while Lloyd by Celebrity Authentics). These signatures can be verified online and come with certification numbers.
These signatures are hard to get and rare as a set.
Pops will each come in a protective soft plastic case.