Central American Union (Guatemala), Macuquina type (1842-1852 AD), Republic Sun & Mountains Counterstamp; countermark on Spanish colonial Bolivia Potosi mint Charles III, Silver cob 8 Reales, 1771 P V/Y, Obverse: Cross of Jerusalem, lions and castles in quarters. Reverse: Pillars of Hercules and waves, value at top center, KM# 45. Host coin very fine, countermark good very fine. Both side with clear visible date. 26.25g, 30.12mm, 91.7% Silver.