1 Ducat - Frederick I

Frederick I had adopted the Prussian royal title in 1701 following an elaborate self-coronation at Königsberg — a ceremony he personally choreographed to sidestep the need for imperial conferral. These ducats were struck during the final years of his reign, a period when his treasury was already strained by the costs of maintaining an outsized court modeled on Versailles. The Berlin mint's gold output in this window was modest, and surviving examples in any grade are genuinely scarce.

The .986 fineness places this among the purest ducats of the period, matching the Dukatengold standard observed across most German states.