A mint mark is a letter, symbol or an inscription on a coin indicating the mint where the coin was produced. It should not be confused with a mintmaster mark which is the mark of the mintmaster.
Mint mark and privy marks on French Cochinchina 20 Cents 1879, Paris Mint
Spanish Milled Dollar with Mexico City Mint Mark.
Carson City Mint 1872 "Liberty Seated" silver dollar reverse, bearing the mint's CC mint mark just beneath the eagle.
Potosí, known as Villa Imperial de Potosí in the colonial period, is the capital city and a municipality of the Department of Potosí in Bolivia. It is one of the highest cities in the world at a nominal 4,090 m (13,420 ft). For centuries, it was the location of the Spanish colonial silver mint. A considerable amount of the city's colonial architecture has been preserved in the historic center of the city, which—along with the globally important Cerro Rico de Potosí—are part of a designated UNESCO World Heritage Site.
Image: 20170808 Bolivia 1409 crop Potosí s RGB (26204037299)
Image: 20170807 Bolivia 1373 crop Potosí s RGB (37270469644)
Image: Potosí con la Catedral basílica al fondo
Image: Vista panorámica de Potosí