Coinage thumb|A denarius minted by Prince Adelchis of Benevento in the name of Emperor Louis II and Empress Engelberga, showing the expansion of Carolingian authority in southern Italy which Louis achieved Coinage had a strong association with the Roman Empire, and Charlemagne took up its regulation with his other imperial duties. The Carolingians exercised controls over the silver coinage of the realm, controlling its composition and value. The name of the emperor, not of the minter, appeared on the coins. Charlemagne worked to suppress mints in northern Germany on the Baltic Sea.
Coinage thumb|A denarius minted by Prince Adelchis of Benevento in the name of Emperor Louis II and Empress Engelberga, showing the expansion of Carolingian authority in southern Italy which Louis achieved Coinage had a strong association with t.he Roman Empire, and Charlemagne took up its regulation with his other imperial duties. The Carolingians exercised controls over the silver coinage of the realm, controlling its composition and value. The name of the emperor, not of the minter, appeared on the coins. Charlemagne worked to suppress mints in northern Germany on the Baltic Sea