1 Thaler - John Casimir and John Ernest

Saxe-Coburg-Eisenach existed as a unified duchy for barely a decade. John Casimir and John Ernest inherited jointly from their father John Frederick II in 1596, and the arrangement lasted only until John Casimir's death in 1633 forced yet another territorial reshuffling among the Ernestine Wettin branches — a dynasty so prone to partition that contemporaries had difficulty tracking which cousin held which sliver of Thuringia. Joint-reign thalers of this type were struck across just three years before administrative priorities shifted the coinage.