Denier - Hermann Ier Brisach

Hermann I ruled Swabia under Ottonian overlordship, and his coinage at Breisach — a Rhine crossing point of considerable strategic value — reflects the decentralized minting authority that characterized the early German duchies before imperial consolidation tightened control. Breisach's position on the Rhine made it an obvious site for a ducal mint, facilitating toll collection and regional trade along one of Europe's primary commercial arteries.

Kluge's cataloging of this type as Kar#247 places it within a narrow documentary window; surviving examples are sparse enough that die linkage studies remain incomplete.