Estados Unidos Peso 1920/10-M XF Details (Cleaned) NGC, Mexico City mint, KM455. This overdate is the key of the type.

Because this coin with overdate is rare this is really great opportunity to own one. 

DESIGN

Obverse: National arms

Reverse: Value and date within 3/4 wreath with Liberty cap above

Edge Lettering: INDEPENDENCIA Y LIBERTAD