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.

EC001.12

Country / Post Ecuador
Date of Issue 1 March 2012
Primary theme Politics & Government (Politicians)
Subject Centenary of the Death of Cordero Crespo
Width 35.0 mm
Height 55.0 mm
Denomination 1.00 USD
Number in set 1
Layout/Format sheet
Perforations 14 by 14
Stamp issuing authority Correos del Ecuador CDE EP
Printer Instituto Geográfico Militar