Denier - Charlemagne Troyes mint

These early Carolingian deniers predate the monetary reform of 793–794, which nearly doubled the weight standard and fundamentally restructured Frankish silver coinage. What Charlemagne inherited from his father Pippin III was a lightweight, regionally inconsistent currency; what he built toward was an empire-wide system anchored at roughly 1.7 grams. The Troyes issues from this earlier phase sit at the old Merovingian-derived standard, struck when the mint at Troyes was still finding its footing within the newly unified administration following the division of the realm at Pippin's death in 768.

The Morrison and Prou references place this among a transitional group where die cutting quality and letter spacing vary considerably across the series — not a strike problem, but a workshop signature of decentralized production before royal oversight tightened.