In what year was the actor born who appeared in both Assault on Precinct 13 and every Rocky installment?
Assault on Precinct 13 (1976 film):  It stars Austin Stoker as a police officer who defends a defunct precinct against an attack by a relentless criminal gang, along with Darwin Joston as a convicted murderer who helps him. Tony Burton: Anthony "Tony" Burton (March 23, 1937 – February 25, 2016) was an American actor, boxer, and football player. Tony Burton:  He, Sylvester Stallone and Burt Young are the only actors who have appeared in every Rocky installment (not counting "Creed").
1937