Under that law, the franc coin would contain 4.5 grams of silver and 0.5 of alloy metal ... Explore More: 10 of the Most Valuable Pennies Today, many French coins prized by dealers and collectors ...

As CoinValueLookup noted, French coinage has a long and tumultuous ... as legal currency and replaced it with the silver ecu and gold Louis coins. However, the term “franc” remained in use ...