4 Ducats - Ferdinand II

Ferdinand II struck 4-ducat multiples throughout his reign, but 1621 carries specific weight: it was the year following the Battle of White Mountain, when Habsburg forces crushed the Bohemian revolt and Ferdinand began consolidating authority over what had been, briefly, a genuinely contested empire. The Austrian mints were busy — war finance ran in both directions, and gold multiples of this kind circulated among the court and military creditors rather than in any ordinary commerce.

The Herinek range cited here, 1592–1657, reflects the broad attribution window typical of undifferentiated dies across Ferdinand's long reign rather than a single confirmed 1621 emission.