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 EE017.11

  1. Ee016.11-80
    Wns Number
    EE016.11
    Country / Post
    Estonia
    Date of Issue
    May 06, 2011
    Subject
    The Struve Geodetic Arc
  2. Ee017.11-80
    Wns Number
    EE017.11
    Country / Post
    Estonia
    Date of Issue
    May 06, 2011
    Subject
    The Struve Geodetic Arc