Denier - Charlemagne Roses mint, K Rx F

Struck during Charlemagne's sole reign over the Frankish kingdoms — before the conquest of Lombardy and the absorption of Saxony had transformed the empire — this denier belongs to the earliest phase of a coinage reform that would eventually standardize silver currency across most of Western Europe. The Roses mint attribution remains a point of scholarly debate; Gariel placed it tentatively, and Morrison's cataloging reflects residual uncertainty about several Carolingian provincial attributions from this period. The "K Rx F" formula — Karl Rex Francorum — dates the piece precisely to before 771, when Carloman's death made fraternal partition irrelevant.