Completed in December 1950 after Disney's version was released but with less staff on the pay roll, on a much lower budget and without the marketing backing it could not compete, it even had to change its name to "Once Upon a Time". It is none the less a landmark in Spanish animation, produced in Barcelona. Less polished than Disney's "Cinderella" it is my opinion much more imaginative and humorous retelling of the fairy tale. For instance watch out for the ghosts' intervention, the dancing horses, or the cartoon characters being entertained by real dancers.
Very much unappreciated it was restored in 2022, and broadcast on Spanish television (channel 2) on 6th January 2023.