This is a Japanese B4 Speed Poster (10.1" x 28.7") for the 1971 Japanese tokusatsu superhero television series Spectreman(Supekutoruman) used to promote the series in Toei movie theaters during its original run.

Created by producer Souji Ushio and produced by P Productions, the series aired on Fuji TV in Japan from January 2, 1971, to March 25, 1972, spanning 63 episodes. The story follows a super-cyborg sent by the Nebula 71 Star to defend Earth against mutated "pollution monsters" created by the villainous space-simian Dr. Goriand his henchman, Rah. Spectreman disguises himself as a human named Jôji Gamô and works with the Pollution Investigation Bureau to scout out Gori's threats.