4 Reales

Peru's fractional silver coinage of the 1830s was struck during a period of profound political instability — the country cycled through multiple presidents and two confederations within this five-year window alone. The 1836–1839 Peru-Bolivian Confederation under Andrés de Santa Cruz disrupted administrative continuity at the Lima and Cuzco mints, and attributing pieces to specific mint facilities during these years requires careful attention to assayer marks.

The .667 fineness reflects a deliberate reduction from colonial-era standards, part of broader efforts to reconcile republican coinage policy with chronic silver shortages in the Andean mining sector following independence disruptions.