5 Ducats - Ferdinand II St. Veit

Ferdinand II's 1628 dating places this issue squarely in the middle of the Thirty Years' War, a period when Habsburg finances were under extraordinary strain funding campaigns across Central Europe. St. Veit — the Carinthian mint — was producing gold multiples partly to service mercenary commanders and war creditors who demanded payment in hard metal rather than debased silver.

The .986 fineness is characteristic of Austro-Hungarian ducats minted to the standard established in 1559, maintained with unusual consistency even as military expenditures mounted. Five-ducat pieces from St. Veit in this decade survive in small numbers; the mint's output was dwarfed by the Vienna and Graz facilities.