An ultra rare original 1965 Mexican theatrical one sheet poster for the release of the classic Luchador film, Blue Demon - El Demonio Azul, starring Blue Demon the masked wrestler [Alejandro Munoz Moreno] and directed by Chano Ureta. Brief story line - a professor challenges a mad scientist, who turns himself into a werewolf. What more do you need to know? 
Blue Demon is considered a legend of lucha libre, starring 25 Lucha films between 1961 and 1979, often alongside in-ring rival El Santo. 
These original Mexican Lucha posters are increasing difficult to find, especially in good condition. They are nearly always printed on thin low quality paper and even the unused ones have paper flaws with tears nicks and creases, which for me is part of their charm.