How many movies have Boris Sichkin and Efim Kopelyan acted in together?

They have worked on 3 movies together! Their first movie together was Goodbye, Boys! (1964) while their highest rated movie together was The New Adventures of the Elusive Avengers (1968). They have not worked together since The New Adventures of the Elusive Avengers (1968). They are most known for their adventure films together.