Denier - Charlemagne Liege mint

Charlemagne's monetary reform of around 793–794 — the capitulary that standardized the heavier pound and mandated a new, uniform silver coinage — makes any piece struck before that reform a product of the transitional Carolingian system still finding its footing. This denier predates that overhaul, struck when regional mints retained considerably more autonomy over weight and fineness. The Liège attribution places production within the ecclesiastical sphere of the Meuse valley, a region whose minting activity was closely tied to episcopal authority rather than direct palace oversight.

Prou's classification of this type took shape in his 1896 corpus, still the foundational reference for Carolingian deniers despite more than a century of subsequent scholarship.