How many movies have Antonio Castañeda and Bernardo Serrano collaborated on?

They have worked on 3 movies together! Their first movie together was The Castle of Mummies of Guanajuato (1973) while their highest rated movie together was Macabre Legends of the Colony (1974). They have not worked together since The Mummies of San Angel (1975). They are most known for their horror films together.