71/2 Reales - Philip IV

The 7½ reales denomination is one of the stranger products of mid-17th century Spanish colonial monetary policy. Introduced to address a chronic shortage of fractional silver after years of debased vellon coinage had eroded public confidence in the Castilian monetary system, it filled a gap between the 4 and 8 reales without ever achieving broad commercial acceptance. The denomination was short-lived precisely because it solved a problem that merchants had already worked around.

The KM#C19.22 attribution places this among the macuquina (cob) coinage of the colonial mints operating under Philip IV, struck by hand from irregular planchets — a process that made each piece dimensionally unique regardless of nominal weight specification.