How many movies have Haris Kerassiotis and Omiros Efstratiadis collaborated on?

They have worked on 1 movie together! Their first movie together was Τελευταία Αποστολή Θανάτου (1966) and was their highest rated movie together. They have not worked together since Τελευταία Αποστολή Θανάτου (1966).