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 DZ017.06

  1. Dz017.06-80
    Wns Number
    DZ017.06
    Country / Post
    Algeria
    Date of Issue
    October 25, 2006
    Subject
    National Tree Day - Terebinth Tree (Pistacia atlantica)
  2. Dz018.06-80
    Wns Number
    DZ018.06
    Country / Post
    Algeria
    Date of Issue
    October 25, 2006
    Subject
    National Tree Day - Pomegranate (Punica granatum)