The World Association for the Development of Philately (WADP) and the Universal Postal Union (UPU) jointly conceived and developed the WADP Numbering System - WNS, which was launched on 1 January 2002.

MX040.11

Country / Post Mexico
Date of Issue 14 October 2011
Primary theme Sport (Sporting events)
Subject Pan American Games Guadalajara 2011
Width 72.0 mm
Height 30.0 mm
Denomination 11.50 MXN
Number in set 3 (show set)
Layout/Format sheet
Perforations 13 by 13
Stamp issuing authority Servicio Postal Mexicano
Printer Talleres de Impresion de Estampillas y Valores