Denier - Charles II Vienne mint

Charles II — Charles the Bald — was granted the Kingdom of Lower Burgundy following the Treaty of Mersen in 870, which carved up the Carolingian realm after his brother Lothair II died without legitimate heirs. Vienne, as the principal city of that kingdom, became an active mint almost immediately. The window for this issue is narrow: Charles held the region until his death in 877, but the references bracket the striking to 869–875, likely reflecting when Vienne was formally absorbed into his monetary system.

Prou's numbering of two adjacent catalog entries (844–845) suggests minor die variation between issues rather than a distinct type change.