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.

MX066.09

Country / Post Mexico
Date of Issue 16 December 2009
Primary theme Energy (Energy conservation)
Subject Saving Energy at Home
Width 72.0 mm
Height 30.0 mm
Denomination 6.50 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