Denier - Charles III monastery of Saint Dionysius

Charles III — "the Simple" — came to power in circumstances that required aggressive coalition-building with ecclesiastical institutions. The monastery of Saint-Denis had been a Carolingian royal foundation since the seventh century, and the right to strike coin in its name was both a fiscal privilege and a political signal. These deniers circulated in the Île-de-France at a moment when Carolingian royal authority was being actively contested by the Robertian dynasty, whose own territorial grip on the region made every assertion of Charles's legitimacy consequential.

The multiple catalog references here — Prou, Gariel, Morrison, PA — reflect decades of scholarly disagreement over precise attribution within the Saint-Denis series.