For those of you who like history, this little coin was issued by Ernest August, Duke of Brunswick-Lueneburg (1661-1692) and after this coin was issued, later the Elector-designate of Hanover. If you follow British lineage at all, Ernest August was the father of the eventual George I of Great Britain. He was married to Sophia of the Palatinate - an heir through the Stuart line of the British royal family. All of the Hanover line of British Regents from George I through the last Queen Victoria were descendants of Ernest August. As for the coin - it is a two year type (1681 and 1686). The Mariengroschen is a division unit of the Hanover Thaler. There were 36 Mariengroschen to the Thaler - thus this coin had a value of 1/9 of a Thaler. The legends read: SOLA BONA QUAE HONESTA - The only good things are those which are honorable. ERN:AUG.D.G.EP:OSN.D.B.&L. - Ernest Augustus, by the grace of God, Bishop of Osnabrueck, Duke of Brunswick and Lueneburg.