Un día de vida

This is great romantic movie, with unforgettable Mexican music. The brief plot: the movie is about two men in Mexican revolution, one being a high military officer and another, being sentenced for capital punishment. The mother of one of them come to see the prisoner, but she was not told that these guys, previously close friends, are now adversaries. The movie has nice cinematography, was done in great BW, and was extremely popular in Yugoslavia in fifties. My mother used to watch the movie three times and cried each time, I watched that movie in the cinema on June 17th, 1986 and cried too. A copy of the movie has been preserved in the "La Cinémathèque de Yougoslavie" and I mention this because I've heard that the original negative has been lost, so somebody from Mexico might be interested in preserving this gem...