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.

QA004.11

Country / Post Qatar
Date of Issue 16 October 2011
Primary theme Sport (Sporting events)
Subject 11th Qatar Classic Squash Championship
Width 33.0 mm
Height 44.0 mm
Denomination 1.00 QAR
Number in set 4 (show set)
Layout/Format miniature sheet of 4 of 4 designs
Perforations 14 by 14
Stamp issuing authority General Postal Corporation of State of Qatar
Printer Joh Enschedé Security Printers
Connect to the web shop of the issuing stamp authority