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.


Country / Post Serbia
Date of Issue 16 March 2017
Primary theme Fauna (Owls)
Subject Protected Animal Species - Owls - Asio otus
Width 30.0 mm
Height 37.5 mm
Denomination 50.00 RSD
Number in set 4 (show set)
Layout/Format sheet of 20
Perforations 13.25 by 13.25
Stamp issuing authority Public Enterprise of PTT Srbija
Printer Zin Belgrade