Revolver and 12$ bills

Revolver and 12$ bills - Man and Woman Sitting at Table

I just watched the movie Revolver and I noticed that they use 12$ bills; after a quick wiki-search I found out that they do not exist.

Why do they use 12$ bills as if they were actual currency?

plot-explanation revolver

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Revolver and 12$ bills - Free stock photo of adult, anxiety, bills

Revolver and 12$ bills - Free stock photo of adult, anxiety, bills

Revolver and 12$ bills - Free stock photo of adult, anxiety, bills

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Images: Mikhail Nilov, Mikhail Nilov, Mikhail Nilov, Mikhail Nilov