Just got my second coin from Braunschweig-Blankenburg/ Furstentum AV Quarter Dukat 1720-HCH Braunschweig Mint Ludwig Rudolf Furst zu Braunschweig-Blankenburg 1714-31 This Principality existed for only 17 years/ before it was absorbed into Braunschweig-Wolfenbuttel Please add your coins from there....