Frederick II issued this denier from Ulm during the period immediately following the Mainz Diet of 1235, where he promulgated the Landfrieden — the first imperial law written in German rather than Latin. The assembly effectively reasserted imperial authority over the German princes after years of Frederick's near-total preoccupation with Italian and Sicilian affairs. Ulm sat at a strategically critical point on the Danube trade routes, and the mint's activity during these years reflects the emperor's deliberate effort to project fiscal presence in Swabia.
Frederick II issued this denier from Ulm during the period immediately following the Mainz Diet of 1235, where he promulgated the Landfrieden — the first imperial law written in German rather than Latin. The assembly effectively reasserted imperial authority over the German princes after years of Frederick's near-total preoccupation with Italian and Sicilian affairs. Ulm sat at a strategically critical point on the Danube trade routes, and the mint's activity during these years reflects the emperor's deliberate effort to project fiscal presence in Swabia.