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.

SY005.09

Country / Post Syrian Arab Republic
Date of Issue 1 May 2009
Primary theme Politics & Government
Economy & Industry
Subject International Workers Day
Width 42.0 mm
Height 30.0 mm
Denomination 15 SYP
Number in set 1
Layout/Format sheet
Perforations 13 by 13
Stamp issuing authority Syrian Arab Republic General Establishment of Posts
Printer