1651 AD., German States, Brandenburg-Prussia, Friedrich Wilhelm, Halberstadt mint, 1 Groschen, KM 264.

German States, Brandenburg-Prussia (Markgrafschaft of Brandenburg), Friedrich Wilhelm (1640-1688), Halberstadt mint, 1651 AD.,
1/24 Taler (1 Groschen = 12 Pfennige) (ø 22 mm / 1,67 g), silver, axis irregular alignment ↑↙ (ca. 230°), small flan crack at 6-7 o´clock on the obv.,
Obv.: FRID WILH V G G M Z B , (Friedrich Wilhelm, Von Gottes Gnaden Marggraf Zu Brandenburg), his bust facing right.
Rev.: D H R R ERTZ C V C F Z H VM / 16 – 51 / 24 , (Des Heiligen Römischen Reichs Erzt Cämmerer Vnd Churfürst), arms (sceptre) within decorated oval frame. Date seperated below by denomination in brackets at bottom.
KM 264 .

Year / Mint Mark / Mintage
1651
1653
1654 450,000
1655 600,000
1656
1658
1659
1660
1661 118,857

From http://www.realedition.de/Numismatik/brandenburg-hohenzollern/NeuI.11.85-weyl4671.html : “Das Fürstentum Halberstadt war erst 1650 zur Markgrafschaft Brandenburg gekommen, und die Halberstädter Münze prägte dann - sehr zum Missfallen der Berliner Münze - bis 161 Groschen, die für den Umlauf in der Kurmark bestimmt waren. Dies hätte die Berliner Münze gern untersagen lassen, doch insgesamt wurden trotzdem rund um fünf Millionen Groschen geprägt, die sich nach dem Münzkatalog von Schrötter, auf den Neumann verweist, in 85 (!) verschiedenartige Katalognummern differenzieren lassen.“

Frederick William (German: Friedrich Wilhelm) (16 February 1620 – 29 April 1688) was Elector of Brandenburg and Duke of Prussia, thus ruler of Brandenburg-Prussia, from 1640 until his death in 1688. A member of the House of Hohenzollern, he is popularly known as "the Great Elector" (der Große Kurfürst) because of his military and political achievements. Frederick William was a staunch pillar of the Calvinist faith, associated with the rising commercial class. He saw the importance of trade and promoted it vigorously. His shrewd domestic reforms gave Prussia a strong position in the post-Westphalian political order of north-central Europe, setting Prussia up for elevation from duchy to kingdom, achieved under his son and successor.

Halberstadt is a town in the German state of Saxony-Anhalt, the capital of Harz district. Located north of the Harz mountain range, it is known for its old town centre that was severely damaged in World War II and rebuilt in the following decades.Halberstadt is a town in the German state of Saxony-Anhalt, the capital of Harz district. Located north of the Harz mountain range, it is known for its old town centre that was severely damaged in World War II and rebuilt in the following decades. From 1479, the diocese was administrated by the Archbishops of Magdeburg. While the Halberstadt citizens turned Protestant around 1540, the cathedral chapter elected Prince Henry Julius of Brunswick-Wolfenbüttel first Lutheran bishop in 1566. During the Thirty Years' War, the town was occupied by the troops of Albrecht von Wallenstein in 1629 and temporarily re-Catholicized according to the imperial Edict of Restitution. According to the 1648 Peace of Westphalia, the prince-bishopric was finally secularized to the Principality of Halberstadt held by Brandenburg-Prussia.

More on https://en.wikipedia.org/wiki/Frederick_William,_Elector_of_Brandenburg ; https://en.wikipedia.org/wiki/Halberstadt