The most common reference is the Oscar-winning Austrian-German film directed by Stefan Ruzowitzky. It tells the true story of , a secret Nazi plan during WWII to destabilize the British economy by flooding it with forged banknotes.
It is a "novel within a novel," exploring characters who struggle with their own authenticity while a real counterfeiting ring operates in the background. Los Falsificadores
If you are looking for a guide on how to spot counterfeit items, experts recommend checking for specific security features: Los Falsificadores