2 Mariengroschen - George William

George William of Calenberg — not to be confused with the better-known George William of Celle — ruled a principality that had been administratively reshuffled multiple times during and after the Thirty Years' War. The 1648 Peace of Westphalia ended three decades of devastation across the German lands, and the small silver coinages that followed in places like Calenberg reflect the slow, uneven monetary restabilization of a region whose mints had often been commandeered or disrupted by occupying forces.

The Mariengroschen was a north German denomination with deep roots in the Brunswick monetary tradition, tied specifically to regional reckoning systems rather than imperial standards.