5 Centimes - Union Commerciale et Industrielle - Caen [14]

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 silver and gold. The fact that this coin was made of aluminum suggests that it was likely produced as a way to commemorate a special event or to promote the use of this new material in coinage.