1/4 Real 'Quarto/Quartilla'

Zacatecas issued these copper fractionals during a period when the federal Mexican government had almost entirely abdicated responsibility for small-denomination coinage. The chronic shortage of low-value circulating pieces forced individual states to fill the gap themselves throughout the 1830s–1850s, producing a patchwork of provincial copper issues with wildly inconsistent quality control. Zacatecas, despite being one of the wealthiest silver-producing regions on earth, apparently couldn't keep small change in circulation.

The extended date range of over two decades reflects repeated reauthorizations rather than continuous minting — production was sporadic, tied to local commerce demands. Die quality deteriorated noticeably across the series.