How many movies have Arnošt Doležel and Soběslav Sejk collaborated on?

They have worked on 4 movies together! Their first movie together was Konec agenta č. 312 (1974) while their highest rated movie together was Svatební skandály slečny Juliány (1980). They have not worked together since Grófinka (1986). They are most known for their comedy films together.