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.

OM032.14

Country / Post Oman
Date of Issue 3 August 2014
Primary theme Fauna (Butterflies)
Subject Wildlife in Oman - Papilio demoleus
Width 45.0 mm
Height 33.0 mm
Denomination 1.50 OMR
Number in set 14 (show set)
Layout/Format miniature sheet of 4 of 4 designs
Perforations 13 by 13
Stamp issuing authority Ministry of Transport & Communications Sultanate of Oman
Printer Cartor
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