Joe Montana Autographed/Signed San Francisco 49ers 20x34 Canvas JSA 12449 This is a 20x34 canvas that has been personally signed by Joe Montana. Joe is regarded as one of the greatest quarterbacks to every play. He is a Hall of Famer, a Super Bowl Champion, and holds multiple records. This includes a certificate of authentication from James Spence Authentication (JSA) and Denver Autographs.