About the Design:

Obverse
National Arms (Eagle on cactus facing left with snake in beak above wreath), with the inscription forming a semicircle above it

Lettering: ESTADOS UNIDOS MEXICANOS

Translation: United States of Mexico

Reverse
Value, Portrait of Josefa Ortiz de Domínguez to the right

Lettering:
CINCO CENTAVOS
Year M

Translation:
5 Centavos
Year Mo

Composition    Brass
Weight           2.75 g
Diameter    18 mm
Thickness    1.5 mm