Denier Parisis - Eustace I Lens mint

Eustace I ruled Boulogne from roughly 1024 until his death around 1049, and his coinage at the Lens mint reflects the fragmented monetary authority of the early Capetian period, when regional lords routinely exercised minting rights with minimal crown interference. The Parisis denomination itself traces to the Carolingian monetary system, though by this point the standard had degraded considerably from its ninth-century benchmarks.

Lens sits well outside Boulogne's coastal heartland, and its operation as a satellite mint under Eustace points to deliberate geographic distribution of coin production — likely tied to toll revenues and market activity along inland trade routes.