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.

All registered stamps issued in 2018 with theme "Winter Olympics"

  1. Kz016.18-80
    Wns Number
    KZ016.18
    Country / Post
    Kazakhstan
    Date of Issue
    September 03, 2018
    Subject
    Sport - XXIII Olympic Winter Games