6 Ducats - Francis Louis

Franz Ludwig von Pfalz-Neuburg held the unusual distinction of simultaneously serving as Archbishop-Elector of both Mainz and Trier — a concentration of ecclesiastical and electoral power that made him one of the most politically significant figures in the Holy Roman Empire during the 1720s and early 1730s. Multi-ducat presentation pieces of this type were not circulating currency; they were diplomatic instruments, struck for distribution at court ceremonies, imperial diets, and as gifts to secular princes whose goodwill an archbishop-elector needed to cultivate.

The Fr#521 designation places this squarely within Friedberg's classification of German ecclesiastical gold multiples, a category notorious for surviving in single-digit population figures.