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.

RS043.17

Country / Post Serbia
Date of Issue 21 August 2017
Primary theme Aviation (Aircraft)
Subject 90th Anniversary of the Serbian National Airline
Width 37.5 mm
Height 30.0 mm
Denomination 23.00 RSD
Number in set 1
Layout/Format sheet of 10
Perforations 13.25 by 13.25
Stamp issuing authority Public Enterprise of PTT Srbija
Printer Zin Belgrade