The F-type 200-peso banknote, 200-peso banknote commemorating the Independence Movement, 500- and 1000-peso banknote, as well as the current G-type 200-, 500-, and 1000- peso banknotes, have two folio numbers on the obverse. Check that both folio numbers are the same; otherwise, the banknote could be altered* and therefore would have no value.
The G-type 200-, 500-, and 1000-peso banknotes display the folio number horizontally and vertically.
*For more information, please consult Article 236 of Mexico’s Federal Penal Code (Código Penal Federal).