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.

RS026.12

Country / Post Serbia
Date of Issue 27 July 2012
Primary theme Olympic Games (Summer Olympics)
Subject London 2012 Olympic Games
Width 29.0 mm
Height 35.0 mm
Denomination 77 CSD
Number in set 2 (show set)
Layout/Format sheet of 8
Perforations 13.75 by 13.25
Stamp issuing authority Public Enterprise of PTT Srbija
Printer Forum Novi Sad