'Lalo González 'Piporro'', who plays Julio Aldama's father, was only ten years older than him in real life.
This movie, distributed in Spain under the title "Maricruz", is frequently confused with El gran espectáculo (1958), from the same year and also directed by Miguel Zacarías and starring Lola Flores, because "El gran espectáculo" was puzzlingly distributed in Spain as "Sueños de oro". They are frequently believed to be the same movie, but they are actually two totally different ones.