How many movies have Eiji Tsuburaya and Shûichi Anbara collaborated on?

They have worked on 4 movies together! Their first movie together was Youth of Heiji Senigata (1953) while their highest rated movie together was Invisible Man (1954). They have not worked together since Half Human: The Story of the Abominable Snowman (1958). They are most known for their science fiction films together.