This movie art item is an authentic original piece

Cast: Ellen Burstyn, Max Von Sydow, Linda Blair, Jason Miller, Lee J. Cobb, Kitty Winn, Jack MacGowran, Rudolf Schundler, Gina Petrushka, Robert Symonds, Vasiliki Maliaros, Titos Vandis, Wallace Rooney, Mary Boylan, Eileen Dietz, Mercedes McCambridge; Directed by: William Friedkin

Synopsis:
Regan (Linda Blair), the adolescent daughter of a movie actress (Ellen Burstyn) residing in Washington D.C., is apparently is possessed by an ancient demon. When all medical avenues are exhausted, her mother goes to a priest who is also a psychiatrist. He realizes Regan is possessed and he and another priest experienced in exorcism risk their lives to administer the rites of demonic exorcism and drive the spirit from Regan before she dies.