The Mariengroschen ("St. Mary´s groschen") is an historical coin that was a type of groschen minted in Lower Saxony and Westphalia from the 16th to the 19th century. It was named after the Virgin Mary who was depicted on the reverse side.
Mariengroschen were first minted in Goslar in 1505 and then in other mints in the Harz mountain region, such as Brunswick and Hildesheim. The first coins were made of 8-lot silver; 80 being struck from 1 gross Cologne Mark. The fine weight decreased in the course of the 16th century; already around 1550 the fineness had been reduced to about half:
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