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 AR002.16

  1. Ar002.16-80
    Wns Number
    AR002.16
    Country / Post
    Argentina
    Date of Issue
    May 23, 2016
    Subject
    América UPAEP - Fight against human trafficking
  2. Ar003.16-80
    Wns Number
    AR003.16
    Country / Post
    Argentina
    Date of Issue
    May 23, 2016
    Subject
    América UPAEP - Fight against human trafficking