The Friedrich d'or (French doré "goldener Friedrich (II.)") was a Prussian gold coin (pistole) nominally worth 5 silver Prussian Reichsthalers. It was used from 1741 to 1855 and since it was a silver standard regular issue coin and trade coin at this time, it had a different purpose to domestic silver coinage or Kurantgeld, the so-called window on the stock exchanges. It was normally traded at a small premium or discount to the face value of 5 silver coins. In Prussian purchase contracts or bonds it was, due to its monetary usage, distinguished as the "preußisch Courant" or "Friedrich d'or".