1656, Brunswick-Wolfenbuttel, Augustus the Younger. Silver 2 Mariengroschen Coin. Mint Year: 1656 Reference: KM-431. Denomination: 2 Mariengroschen Condition: Lightly deformed, otherwise abou XF!Diameter: 18mm Weight: 1.06gm Material: Silver The Principality of Brunswick-Wolfenbüttel was a principality within the Duchy of Brunswick-Lüneburg, whose history was characterised by n ...