1 Ducat - Frederik III

1657 places this coin squarely within the First Northern War, during which Denmark suffered one of its most catastrophic military defeats. Swedish forces under Charles X Gustav crossed the frozen Belts in February 1658 — a maneuver considered impossible — and forced Frederik III to sign the Treaty of Roskilde, ceding roughly a third of Danish territory including Scania, Blekinge, and Bornholm. Gold ducats of this period were instruments of diplomacy and officer pay rather than everyday commerce; no ordinary Dane handled one.

Fr#101 is among the scarcer Frederik III ducat references, with surviving examples distributed thinly across Scandinavian institutional collections.