(Hanna-Barbera Studios, 1973) Original opening title sequence cel featuring The Legion of Doom from Challenge of the Super Friends. The cel is placed on a color copy background. Overall image showing 11 super-villains measures 9.5 x 7, with a mat opening of approximately the same size. Villains shown are: Riddler, Lex Luthor, Brainiac, Sinestro, Scarecrow, Grodd, Solomon Grundy, Giganta, Bizarro, Toyman, and Cheetah, with Captain Cold’s hand visible along the right edge. Mat dimensions are 14 x 11. In fine condition. A very rare piece in high demand.