How many movies have Nageshwara Rao Akkineni and Pingali Nagendra Rao collaborated on?

They have worked on 4 movies together! Their first movie together was Vindhya Rani (1948) while their highest rated movie together was Missamma (1955). They have not worked together since Chanakya Chandragupta (1977). They are most known for their drama films together.