1 Thaler - Adam Frederick of Seinsheim Konventionstaler

Adam Frederick of Seinsheim ruled simultaneously as Prince-Bishop of both Würzburg and Bamberg from 1757 until his death in 1779 — a dual tenure that concentrated unusual fiscal and ecclesiastical authority in a single administrator during the turbulent years of the Seven Years' War. This Konventionstaler was struck under the monetary convention of 1753, the Habsburg-Bavaria agreement that standardized the 10-thaler-per-Cologne-mark silver ratio and effectively displaced the older Reichsthaler system across southern German territories. Würzburg's adoption of the convention standard was politically deliberate, aligning the prince-bishopric firmly within the Austrian orbit.