Dos chicas locas locas
A millionaire leaves all his fortune to his older granddaughter. But his two granddaughters are twins and nobody knows who's the older one is.
Starring Pilar Bayona, Aurora Bayona, Tito Mora, Miguel Ríos, Mari Carmen Prendes, Trini Alonso, Tony Soler, Adriano Domínguez, Antonio Queipo, Erasmo Pascual
Watch "Dos chicas locas locas" on FlixOlè released in 1964. It's a comedy movie, and has a rating of 5.3 out of 10 from Imdb which is fairly okay for this kind of movie.