Watch List notes:

M3815c – Un Peso El Estado de Sonora 1913. AU. 165 x 77 mm. Tercera Serie. Impreso por la Imprenta del Estado conforme al decreto del 27 de agosto de 1913, esquinas ligeramente maltratadas

ENGLISH:
165 x 77 mm. Third Series. Printed by the State Printing Office in accordance with the decree of August 27, 1913, slightly battered corners.