1 Prague Groschen Counterstamped

Cham, a Bavarian imperial city on the Regen River, lacked minting rights but retained the authority to counterstamp foreign silver to validate it for local circulation. These Prague Groschen, struck under the Bohemian kings and flowing westward through trade routes, received the city's punch to guarantee acceptance — an assertion of municipal commercial authority without the privilege of original coinage. The practice was common enough along the Bohemian-Bavarian border corridor, where Groschen moved freely but trust in foreign silver was conditional.

Krůsy C 1,2 distinguishes two counterstamp variants applied during this forty-year window.