25 Ducat - Philip Charles of Eltz-Kempenich

Philip Charles of Eltz-Kempenich served as Archbishop-Elector of Mainz from 1732 until his death in 1743, and multi-ducat presentation pieces of this magnitude were not monetary instruments in any practical sense — they were diplomatic currency, struck to be gifted to princes, ambassadors, and imperial officials. A 25-ducat piece represents one of the largest denomination multiples produced in the Holy Roman Empire's ecclesiastical minting tradition, and surviving examples almost invariably passed directly from the mint into a treasury or cabinet rather than into circulation.

Mainz retained its status as the premier ecclesiastical electorate, with its archbishop holding the arch-chancellorship of Germany — a title that made such lavish presentation strikings politically expected.