Denier - Frederick II Nuremberg mint

Frederick II spent the final years of his reign in open war with Pope Innocent IV, who had declared him deposed at the Council of Lyon in 1245 — the precise moment this coinage begins. The Nuremberg mint was among the imperial facilities Frederick retained firm control over as German princes, sensing weakness, began drifting toward the papal-backed anti-king Henry Raspe. These deniers were struck under conditions of genuine political disintegration, with Frederick conducting his defense of imperial authority largely from Italy while his German holdings frayed at the edges.

Frederick died in December 1250, giving this type a hard terminal date confirmed by history rather than numismatic convention.