YOU ARE BIDDING ON (1251-1259) MAINZ GERHARD I PFENNIG MAINZ MINT CAPPE-412 NGC MINT STATE 

Gerhard I von Daun-Kirberg served as the Archbishop and Prince-Elector of Mainz from 1251 until his death in 1259. A prominent figure during the Great Interregnum in the Holy Roman Empire, his brief episcopate was primarily defined by navigating complex regional conflicts and maintaining the independence of the Electorate of Mainz. (REFERENCE WIKIPEDIA)