Nostradamus Trailers

Above are TV trailers for two of the four Nostradamus films starring El Vampiro himself--German Robles--and directed by Frederico Curiel. Robles made these series of films in 1959 for Mexico's America Studios, which according to union rules mandated that films be shot serial-like, in episodes. K. Gordon Murray bought up these films for the United States, as well as the horror films from Abel Salazar, dubbed them, and then released them primarily to television, though a few saw limited theatrical release, sometimes after their television debut!

From the above trailers, it appears that trailers were made for at least two Nostradamus films. Note the lengthy silence that comes at the end, while the scenes still play out visually. This would be the place were a voice-over would announce where and when the film would be shown, if theatrically, or the time it would be shown on television.