Tom Baker's 6th season as the 4th Doctor Who was also the 7th and final straight season in a row to show the Doctor Who diamond logo. It was introduced at the start of Jon Pertwee's 5th & final season as the 3rd Doctor Who.
I am confused about the ownership rights to Deadpool after seeing him appear in a 1979 Doctor Who episode of this series entitled Revenge Of The Plants (episode #4). Where does the actual mask originate, and with who, before it is briefly displayed in that episode? (I was born the same year). Thank You, Your Fan