The 1950s and early 1960s are considered by many to be a golden age of Greek cinema. Directors and actors of this era were recognized as important historical figures in Greece and some gained international acclaim: Irene Papas, Melina Mercouri, Mihalis Kakogiannis, Alekos Sakellarios, Nikos Tsiforos, Iakovos Kambanelis, Katina Paxinou, Nikos Koundouros, Ellie Lambeti, and others. More than sixty films per year were made, with the majority having film noir elements. Notable films were Η κάλπικη λίρα (1955 directed by Giorgos Tzavellas), Πικρό Ψωμί (1951, directed by Grigoris Grigoriou), O Drakos (1956 directed by Nikos Koundouros), Stella (1955 directed by Cacoyannis and written by Kampanellis).