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.

OM009.12

Country / Post Oman
Date of Issue 3 August 2012
Primary theme Post & Philately
Subject Arab Postal Day
Width 49.0 mm
Height 30.0 mm
Denomination 1.00 OMR
Number in set 1
Layout/Format sheet
Perforations 13.5 by 13.5
Stamp issuing authority Ministry of Transport & Communications Sultanate of Oman
Printer
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