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 RS041.17

  1. Rs040.17-80
    Wns Number
    RS040.17
    Country / Post
    Serbia
    Date of Issue
    June 01, 2017
    Subject
    European Nature Protection - Aldrovanda vesiculosa
  2. Rs041.17-80
    Wns Number
    RS041.17
    Country / Post
    Serbia
    Date of Issue
    June 01, 2017
    Subject
    European Nature Protection - Aythya nyroca