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.

MX006.11

Country / Post Mexico
Date of Issue 29 April 2011
Primary theme Agriculture & Food (Crops & Farming)
Economy & Industry
Flora
Subject 50th Anniversary of the National Control and Seed Certfication
Width 30.0 mm
Height 72.0 mm
Denomination 7.00 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