1/4 Real 'Quarto/Quartilla'

Jalisco's copper quartos were an emergency provincial issue, authorized as the young Mexican republic struggled to maintain a functioning small-change supply during the Reform War — the brutal three-year civil conflict between Liberal and Conservative factions that fractured federal monetary authority and forced individual states to fend for themselves. With silver fractions effectively withdrawn from circulation or hoarded, copper became the only practical medium for petty transactions across much of western Mexico.

KM#356 is known with significant die variation across the 1858–1860 window, a predictable consequence of decentralized state-level production with limited quality control.