Friedrich d'or

It was used from 1741 to 1855 as a regularly-issued gold trade coin at this time, and was traded at a small premium or discount to its face value of five thalers in silver standard currency (silberkurantgeld) used in the stock exchanges and elsewhere.

Prussian purchase contracts or bonds payable in 5-thaler gold pistoles (rather than silver currency) were noted as payable in "XX thalers, preußisch Courant" or "Friedrich d'or".

The Friedrich d'or pistole of 5 thalers was issued when the ratio of gold to silver price dropped from 15 to 14.5 in the first half of the 18th century, making it cheaper to repay thaler-denominated obligations in gold.

When the gold-silver ratio rose again, the pistole then traded at 5 thalers plus an agio or premium.

On the obverse of the Friedrich d'or was the king's head, and on the reverse was an eagle standing on its shield.