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.

OM018.14

Country / Post Oman
Date of Issue 5 December 2014
Primary theme Economy & Industry (Economic Aid)
Mankind
Subject Sultan Qaboos Award for Volunteer Work
Width 40.0 mm
Height 40.0 mm
Denomination 2.50 OMR
Number in set 1
Layout/Format sheet
Perforations 13 by 13
Stamp issuing authority Ministry of Transport & Communications Sultanate of Oman
Printer Cartor
Connect to the web shop of the issuing stamp authority