5 Ducats

Regensburg occupied a peculiar constitutional position within the Holy Roman Empire: as the permanent seat of the Reichstag from 1663 onward, the city hosted the empire's perpetual diet while simultaneously exercising its own minting rights as a Free City. The right to strike gold multiples of this weight was a deliberate assertion of civic prestige, not a response to commercial demand — five-ducat pieces in this period were almost never spent.

The date range spanning 1765 to 1790 brackets the reigns of both Franz I and Joseph II as emperor, meaning the imperial overlordship acknowledged on these pieces changed hands at least once during the issue's production run.