1/2 Thaler - Rudolph August and Anthony Ulrich

Brunswick-Wolfenbüttel operated under a peculiar co-rulership arrangement for decades — Rudolph August had governed alone since 1666, but pressure from the ducal family forced him to accept his younger brother Anthony Ulrich as co-regent in 1685. The elder brother's death in January 1704 ended the arrangement, making coins bearing both names a product of a narrow fifteen-year window, with this issue struck in the final years before that partition closed.

Welter 2083 distinguishes this half thaler within a crowded sequence of joint-reign types. The short dating span of 1700–1701 limits surviving examples considerably.