102 mins | Drama | Nov. 27, 1963
102 mins | Drama | Nov. 27, 1963
| Producers | Asturias Films |
| Original title | Piedra de toque |
| Directors | Mario Berriatúa, Julio Buchs |
| Writers | Jaime García Herranz, José Luis Martínez Mollá, Julio Buchs |
as Carlos Rivera
as Dora
as Elena
as Montoro
as Don Enrique Rivera
as Lino Salazar
as Barman
as Padre Antonio (uncredited)
as Asistente al Balele