A large and impressive photograph double-signed by Muhammad Ali and Ken Norton, 30 by 40in. b&w image portraying the famous image of Ken Norton playfu

A large and impressive photograph double-signed by Muhammad Ali and Ken Norton, 30 by 40in. b&w image portraying the famous image of Ken Norton playfully chasing Muhammad Ali inside Yankee Stadium 3rd June 1976, signed by both boxers in blue ink, mounted, framed & glazed, overall 112 by 134cm.; sold with a certificate of authenticity issued by Park West Gallery (2)