1 Thaler - Rudolph August and Anthony Ulrich

Rudolph August and Anthony Ulrich ruled Brunswick-Wolfenbüttel jointly from 1685, an arrangement that produced one of the more unusual co-regency coinages in the German states — both names appearing on the same issue despite the brothers holding markedly different political temperaments. Rudolph August, the elder, was by the early 1700s largely withdrawn from active governance, leaving Anthony Ulrich the dominant force. He would go on to convert to Catholicism in 1710, a decision that scandalized Protestant Brunswick but secured dynastic alliances he had pursued for decades.

The joint coinage effectively ended with Rudolph August's death in January 1704, making the date range on this type a hard boundary.