1 Frederick d'Or - Frederick William III

Frederick William III ascended the Prussian throne in November 1797, and this Friedrich d'Or belongs to the brief transitional window before his own coinage types were established — struck in his name but carrying design continuity from the Frederick II-era gold that had defined Prussian currency for decades. The Friedrich d'Or denomination itself dated to Frederick the Great's monetary reforms of 1750, calibrated to compete directly with the Dutch ducat in international trade.

Prussia's mint at Berlin produced these under considerable political tension; Frederick William III inherited a kingdom already unnerved by French Revolutionary expansion across the Rhine.