4 Ducats - Henry Wenceslaus and Charles Frederick I

Münsterberg-Oels was a Silesian duchy caught directly in the opening violence of the Thirty Years' War. The joint reign of Henry Wenceslaus and Charles Frederick I — brothers ruling simultaneously under the Piast inheritance customs common to fragmented Silesian territories — lasted only from 1617 to 1621, when Charles Frederick died. These large gold multiples were not struck for commerce; they functioned as diplomatic gifts and emergency wealth transfers as Protestant Silesian lords scrambled to assess their position after the Battle of White Mountain in November 1620.

The timing of this issue, straddling 1620–1621, places it precisely within those months of maximum political crisis for the Bohemian Protestant cause.