The first feature film shot in the Technirama wide screen process. Developed by the Technicolor Corporation, This was essentially a combination of an anamorphic lens with VistaVision's sideways film movement.
When Maria sells her ring for 100,000 French francs, that would equate to $238 at the time or $2,170 in 2018.
In the film, Natalie Trundy's character pretends to be 19 years old, but is really only 18. In fact, she was only 16 when the film was released.