Banco de Mexico - Direccion De Emision Fabrica De Billetes, 1989, DuraNote Polymer Advertising Note. Mexico, 20 Denomination, Fully printed on DuraNote POLYMER Paper in black, light green and red-brown with m/c underprint, Portrait of Don Rodrigo Gomez on right and the bank on the left, "Muestra Sin Valor" engraved in small letters as part of the design on the right, back with engraving instruments and ornate designs, the back has a thin shiny coating almost as if it was laminated, AU, Printed by Banco De Mexico. Banco de Mexico - Direccion De Emision Fabrica De Billetes, 1989, DuraNote Polymer Advertising Note. Mexico, 20 Denomination, Fully printed on DuraNote POLYMER Paper in black, light green and red-brown with m/c underprint, Portrait of Don Rodrigo Gomez on right and the bank on the left, "Muestra Sin Valor" engraved in small letters as part of the design on the right, back with engraving instruments and ornate designs, the back has a thin shiny coating almost as if it was laminated, AU, Printed by Banco De Mexico.