Details, specifications, values and general information for the French Silver Franc. Also find this coin and many others at the best prices. French Gold 20 Franc Roosters were struck at the Paris Mint and are a popular investment coin. These Gold pieces from the French Republic posses both. Weight, g. Material, Nickel. Orientation, Coin. Mint, France - Paris (A). Edge Type, plain. Designer, Henri-Auguste Patey. Catalog prices *what it means?