This photo plate was used in the John Favreau film Cowboys & Aliens. The photo is owned by Jake Lonergan (Daniel Craig) and depicts his lost love, Alice (Abigail Spencer) and is the only link to his past when he awakes in the desert with no memory of who he is or how he got there.
This photo is important to the plot as it is the item that keeps Lonergan going even though he cannot remember who the woman in the picture is and can be seen in several prominent scenes in the movie.