1812, Poland, Danzig (City). Beautiful Copper Groschen (Grosz) Coin Mint Year: 1812Mint Place: DanzigReference: KM-137.Denomination: Groschen (Grosz)Mint Official: Johann Ludwi Meyer (M)Material: CopperDiameter: 21mm Weight: 3.53gmGdansk (German: Danzig) is the city at the centre of the fourth-largest metropolitan area in Poland. It is Poland’s principal seaport as well as the capital ...