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.

MX044.11

Country / Post Mexico
Date of Issue 18 October 2011
Primary theme Medicine (Health Campaigns)
Subject Health and Safety in Mexico
Width 40.0 mm
Height 40.0 mm
Denomination 7.00 MXN
Number in set 6 (show set)
Layout/Format miniature sheet of 6 of 6 designs
Perforations 13 by 13
Stamp issuing authority Servicio Postal Mexicano
Printer Talleres de Impresion de Estampillas y Valores