Cleopatra (1970)
Cleopatra is a 1970 Japanese anime film directed by Osamu Tezuka and Eiichi Yamamoto. When the film was released in the United States, American distributors changed the title to Cleopatra: Queen of Sex and released it with a self-applied X. Cleopatra was not submitted to the MPAA, and may not have received an X rating if it had been.
More at Wikipedia.