How many movies have Ghantasala and Nageshwara Rao Pithapuram collaborated on?

They have worked on 4 movies together! Their first movie together was Palletoori Pilla (1950) while their highest rated movie together was Panduranga Mahatyam (1957). They have not worked together since Kula Gowravam (1972). They are most known for their drama films together.