1 Ducat - Ferdinand III Vienna

Ferdinand III inherited the Imperial throne mid-war and spent the bulk of his reign trying to extricate the Habsburgs from the Thirty Years' War — a conflict that had, by the 1640s, utterly exhausted the Empire's finances and disrupted minting across much of Central Europe. The Vienna ducat issues of his reign were struck continuously against this backdrop of military expenditure, diplomatic maneuvering, and the eventual Peace of Westphalia in 1648, which fundamentally reshaped Habsburg territorial claims.

The Herinek numbers spanning 192–205 reflect considerable die variation across the fourteen-year span, with subtle differences in the rendering of the orb and the arrangement of the imperial titles used to distinguish annual production.