Denier - Henry I Herstal mint

Henry I of Brabant struck deniers at Herstal during a period when the duchy was aggressively consolidating minting rights along the Meuse corridor — Herstal itself being a site of Carolingian-era fiscal significance that Henry leveraged as much for political symbolism as for monetary output. The weight of surviving examples varies considerably within the type, reflecting the loose supervisory grip typical of decentralized Mosan minting rather than any single reform or debasement event.

The Dengis classification separates at least three die variants within this type, suggesting sustained production across multiple workshop campaigns rather than a single concentrated emission.