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 EC030.16

  1. Ec030.16-80
    Wns Number
    EC030.16
    Country / Post
    Ecuador
    Date of Issue
    November 14, 2016
    Subject
    3rd Geodesic Mission France - Ecuador (1736 - 1901 - 2016)
  2. Ec031.16-80
    Wns Number
    EC031.16
    Country / Post
    Ecuador
    Date of Issue
    November 14, 2016
    Subject
    3rd Geodesic Mission France - Ecuador (1736 - 1901 - 2016)