Obverse: 

The profile of Charles X, bare-chested, is depicted in the center of the coin. The inscription "Charles X King of France" surrounds the bust. Below the portrait, you will also find the signature of the famous engraver Auguste François MICHAUT.

Reverse:

On the reverse, you will also appreciate the crowned French écu with fleur-de-lis, between 2 laurel branches tied at their base. The face value "40 francs" and the coin's mint year are harmoniously arranged around the central motif.