1 Ducat - Louis Rudolph Bicentenary of the Reformation

The Bicentenary of the Reformation in 1717 prompted a wave of commemorative medallic coinage across the Lutheran German states, with Brunswick-Blankenburg among the principalities that seized on the occasion as both a religious statement and a demonstration of dynastic legitimacy. Louis Rudolph had converted territories and court culture firmly around Lutheran orthodoxy, and the 1717 jubilee — marking two centuries since Luther's Wittenberg theses — gave smaller German rulers a rare opportunity to assert confessional identity in gold.

The .986 fineness places this squarely in the tradition of high-purity ducats minted for presentation rather than circulation.