24 Mariengroschen - Charles I

Brunswick-Wolfenbüttel's 24 Mariengroschen denomination was a workhorse of northern German commerce, its value fixed at two-thirds of a Reichsthaler under the Reichsmünzfuss system. Charles I ruled the principality for an unusually long stretch — from 1735 until his death in 1780 — which explains the extended date range on this type. His reign coincided with the Seven Years' War, during which Brunswick troops fought alongside Hanoverian and British forces, and military expenditure placed sustained pressure on the principality's silver coinage.

The Mariengroschen itself was a distinctly Lower Saxon accounting unit, largely obsolete elsewhere in the Empire by this period.