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.

RS049.17

Country / Post Serbia
Date of Issue 9 October 2017
Primary theme Post & Philately (Stamps on stamps)
Subject Postage Stamp Day
Width 35.0 mm
Height 34.8 mm
Denomination 23.00 RSD
Number in set 1
Layout/Format sheet of 25
Perforations 13.25 by 13.25
Stamp issuing authority Public Enterprise of PTT Srbija
Printer Zin Belgrade