20 Centimes - Groupement des Commerçants, Industriels et Habitants - Joinville-le-Pont [94]

One interesting fact about this coin is that it was made of aluminum, which was a relatively new material for coins at the time. Aluminum was first used in coinage in the late 19th century, and it was not widely used until the early 20th century. The use of aluminum in coins was seen as a way to reduce the cost of production, as it was less expensive than traditional metals like gold, silver, and copper. However, aluminum coins were not widely accepted by the public, and they were eventually phased out in many countries due to their low durability and resistance to wear and tear. Today, aluminum coins are considered rare and are highly sought after by collectors.