Coupland Simon, Meijns Brigitte and De Clercq Wim, « A new mint for Charlemagne (768-†814)? An investigation into the earliest history of Bruges », Revue du Nord, no 451, juillet-décembre 2025, p. 371-394.
ABSTRACT: A denier of Charlemagne discovered at Wijk bij Duurstede in the Netherlands in 2021 bore the previously unrecorded reverse inscription BVR-GES, raising the possibility that this denoted the Belgian city of Bruges. The inclusion of an axe in the reverse design pointed to a northern mint, and other coins with an axe from BONA are here read as BONONIA and attributed to Boulogne, another northern port. This coin, minted before 793, would represent the earliest written reference to Bruges, but
a mid-9th-century text refers to an already established local fortification, and this could have been constructed as part of Charlemagne’s defences along the North Sea coast in the face of Scandinavian raids. It may have been linked to the defence of the royal monastery at nearby Torhout. Archaeological finds from the city and its hinterland can be seen as offering further support to this earlier dating of the settlement, and the topography of the wider region is also consistent with the hypothesis.