The original 6th segment of the Key to Time used in the production of the long running BBC television series Doctor Who. The quest object of the story, "The Armageddon Factor," this particular segment formed part of the cube which is seen spinning at the beginning of the first episode, "The Ribos Operation." The complete key was owned by producer, John Nathan-Turner, and was on display for a number of years in the Doctor Who production office. Tape residue remains from where it was stuck to the other pieces for filming.
