1 Ducat

Regensburg occupied a peculiar position in the Holy Roman Empire — simultaneously a free imperial city and, from 1663 onward, the permanent seat of the Reichstag. That body met in continuous session for over a century without ever formally adjourning, which meant Regensburg sustained a concentration of diplomats, princes' representatives, and imperial functionaries that few German cities could match. The city's right to strike gold coinage was partly a function of this status, a financial privilege jealously maintained against imperial pressure to consolidate minting authority.

The twenty-year span of this type reflects die reuse rather than continuous fresh production — Regensburg's mint output was modest, and the city stretched its dies accordingly.