What is one french piastres worth in 1800s?

In the 1800s, the French piastre, also known as the piastre de commerce, was a silver coin widely used in trade, particularly in French colonies. Its value fluctuated based on silver prices and regional economic conditions, but it was typically worth about 5 francs. However, specific values could vary significantly in different markets and over time due to inflation and changes in the monetary system.