Royal Coin, Louis XIII. Ten Louis d'Or
The mechanization of the minting of coins from precious metals in France made possible the creation, in 1640, of the louis d'or, named after King Louis XIII (1601–43; reigned, 1610–43), who first introduced the coins. This series of gold pieces was part of a reform that changed the minting method from hammered coinage to a more precisely milled and weighed coinage. These coins included three types: the louis, the double louis, and the quadruple louis. It has been customary since the 17th century (incorrectly) to call the ...