Mariengroschen were first minted in Goslar in 1505 , then in other mints in the Harz region such as Braunschweig and Hildesheim . The first coins were made of 8- lot silver; 80 were struck from the rough Cologne mark . The fine weight decreased in the course of the 16th century; As early as 1550, the fineness had been reduced to about half:
- Braunschweig 1514: weight 2.75 g with 1.375 g silver content;
- Hildesheim 1528: weight 2.88 g with 1.062 silver content;
- Goslar 1551: weight 2.43 g with 0.91 g silver content;
- Braunschweig 1572: Weight 1.504 g with 0.69 g silver content.
The estates of the Lower Saxony Reichskreis , which were entrusted with the supervision of coins, followed this development. Due to the depreciation of the Mariengroschen, the Meissen groschen gained influence.
In the Kingdom of Hanover , Mariengroschen were last minted as a convention coin in 1816–1820 , the Duchy of Braunschweig minted the Mariengroschen in five flutes until 1834, and Schaumburg-Lippe until 1821 with 1/4 fineness.
- Meyers Großes Konversations-Lexikon, Volume 13. Leipzig 1908, p. 298.
- Vol. 5, pp. 273 f.
- Hermann Grote: Coin Studies . 9 vols. Abdr. D. Ed. Leipzig, 1857–1877. Graz: Akad. Druck- u. Verl.-Anst., 1969. ISBN 3-201-00336-0 .
- Gerhard Welter : The coins of the Guelphs since Heinrich the Lion , Volume 1. Braunschweig 1971. P. 452.