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.

Stamps issued with RS021.08

  1. Rs021.08-80
    Wns Number
    RS021.08
    Country / Post
    Serbia
    Date of Issue
    May 23, 2008
    Subject
    European Nature Protection - Lake of Vlasina
  2. Rs022.08-80
    Wns Number
    RS022.08
    Country / Post
    Serbia
    Date of Issue
    May 23, 2008
    Subject
    European Nature Protection - Djavolja varos (Devil's Town)