Ray Arcel's hair is totally gray until he goes to the cemetery to visit his first wife's grave when it is mostly black under his hat.
Some of the cars in the film are wrong for the period. For example, when Roberto first meets Felicidad it is supposed to be in 1971 but they walk past a green Chevy Malibu model that was not built until 1973. Also, set in 1971, Roberto is leaning back trying to look cool for Felicidad and there is a Ford Granada parked on the street. The Ford Granada was not built until 1975.