10 Pesos El Estado de Sonora

Sonora was one of the few Mexican states that managed to issue genuinely stable emergency currency during the Revolution. While Carrancista and Villista paper collapsed repeatedly, Sonora's notes — backed by the state government and its customs revenues — held enough confidence to circulate at or near face value through much of 1915. The American Bank Note Company's involvement was not incidental: the state deliberately sought a foreign, credible printer to signal fiscal seriousness at a moment when most Mexican paper was being refused outright.

The S1073 belongs to a well-documented ABNC series for Sonora, and surviving examples in sound condition are less scarce than the improvised rubber-stamped issues from other Revolutionary factions — but the 10 Peso denomination sees considerably more demand than the smaller values in this run.