6 Mariengroschen - Charles I

Charles I ruled Brunswick-Wolfenbüttel from 1735 until his death in 1780, a reign of 45 years that coincided with the broader consolidation of smaller German principalities into more coherent administrative units under Habsburg pressure and the shadow of Prussian expansion. The Mariengroschen — literally "Mary's groschen" — was a denomination rooted in Lower Saxon monetary tradition dating back to the 14th century, named for the Virgin Mary imagery that once dominated the type.

Brunswick-Wolfenbüttel maintained its own mint throughout Charles's reign despite the economic logic increasingly favoring monetary union with neighboring states. The 6 Mariengroschen piece occupied an awkward middle denomination in daily commerce, too large for small transactions and too small for significant ones.