2 Ducats - Ferdinand III Prague

Ferdinand III inherited the Bohemian throne in the aftermath of the White Mountain catastrophe and the brutal re-Catholicization that followed, but his reign also overlapped almost exactly with the Thirty Years' War — a conflict that devastated Bohemian silver mining and made gold coinage increasingly difficult to produce in consistent quantities. The Prague mint operated under severe disruption during much of this period, with Swedish forces occupying parts of Bohemia as late as 1648.

The Fr#224 designation places this squarely in Friedberg's gold corpus as a recognized type, though die workmanship across the issue varies considerably — Prague goldsmiths were not always working under stable conditions.