Denier - Theoderich

Basel's episcopal mint operated under imperial privilege, and this denier falls within the episcopate of Dietrich I of Basle, who held the see during a period of intense Salian consolidation in the upper Rhine. Henry III relied heavily on loyal bishop-administrators to anchor royal authority in Burgundy following his acquisition of that kingdom in 1033, and Basel sat at a critical crossing of the Rhine on that route south.

The Michd Bâle#14 reference places this among a small documented group of episcopal deniers from the mid-eleventh century that survive in very limited numbers — thin flans and soft silver made them poor survivors.