20 Kreuzers - Adam Frederick of Seinsheim Konventionskreuzer

Adam Friedrich von Seinsheim held the unusual distinction of ruling two prince-bishoprics simultaneously — Würzburg from 1755 and Bamberg from 1757 — making him one of the more administratively powerful ecclesiastical princes in the Holy Roman Empire during the Seven Years' War. That conflict ran directly through his tenure, and Franconia bore considerable financial strain from troop movements and occupation demands. The Konventionskreuzer standard itself dated to the 1753 Convention of Vienna, which aligned the coinage of Austria and Bavaria; Würzburg's adoption placed it within that monetary bloc.

Helmschrot 806 is the standard reference for this type, with KM#358 cross-referencing the same dies.