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.

CO020.17

Country / Post Colombia
Date of Issue 6 July 2017
Primary theme International Organisations
Subject 300 Years of Universal Masonry (1717-2017)
Width 30.0 mm
Height 40.0 mm
Denomination 500 COP
Number in set 2 (show set)
Layout/Format sheet of 9
Perforations 13.5 by 13.5
Stamp issuing authority Servicios Postales Nacionales SA
Printer Cartor Security Printing