Denier - Pepin the Short Mainz mint

Pépin III seized the Frankish throne in 751 with papal endorsement — the first Carolingian king, having deposed the last Merovingian — and his coinage reform was among the first acts that distinguished his reign from what came before. The Mainz mint held particular strategic importance, anchoring Carolingian monetary authority east of the Rhine at a moment when that frontier was anything but secure. Pépin's deniers are the direct precursors to Charlemagne's more celebrated reform coinage, making them structurally transitional: heavier than late Merovingian issues yet not fully standardized across the realm.