50 Pesos El Estado de Chihuahua

Chihuahua's state government issued its own paper money during the Revolution because the federal monetary system had effectively collapsed — Villista forces controlled the north, and the state needed a workable circulating medium regardless of who held Mexico City. Two separate American firms handled production: Maverick-Clarke in San Antonio printed part of the series while Norris Peters in Washington handled additional runs, which occasionally produces subtle differences in ink density and registration between otherwise identical notes.

The split contract across two printers is the detail worth watching here.