A campaign has been running on TV to get the message through. Two separate advertisements feature the same actors playing different characters.
In one, Jean-Gérard asks Pierre-Marie if he knows what his grandmother told him to put in his washing to make it smell good. "Yes, Monsieur Jean-Gérard" says Pierre-Marie. "French franc notes, ten years ago." Jean-Gérard gasps with shock as a voiceover asks viewers to remember where they may have left their last French francs.
In a second version, the two men are dressed as women, Jacqueline and Nicole, and find a stash of notes in some books.
Both advertisements end with the message that notes must be handed in by February 17th 2012.
French franc notes each featured a well-known figure from French history, including the composer Claude Debussy (20 francs), the author Antoine de Saint-Éxupéry (50 francs), the painter Cézanne (100 francs), engineer Gustave Eiffel (200 francs) and scientists Pierre et Marie Curie (500 francs).
A 20 franc note will be exchanged for €3.04 ($4.09). The campaign is supported with a website with more information jechangemesfrancs.com