10 Centavos El Estado de Sonora

Sonora's state government began issuing its own fractional currency in 1915 because the Mexican Revolution had so thoroughly disrupted the national money supply that small-denomination coins had vanished from circulation entirely — hoarded, melted, or simply gone. Governor José María Maytorena's administration turned to the Imprenta del Estado in Hermosillo as the practical solution, producing notes locally rather than waiting on a federal authority that had fractured into competing factions.

The S1078 series is among the more rudimentary products of that press — printed on whatever paper was available, with security considerations subordinated to speed of production. Counterfeiting was a documented problem across the Sonoran issues generally.