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 EC023.16

  1. Ec023.16-80
    Wns Number
    EC023.16
    Country / Post
    Ecuador
    Date of Issue
    October 28, 2016
    Subject
    Carta de Jamaica 1815
  2. Ec024.16-80
    Wns Number
    EC024.16
    Country / Post
    Ecuador
    Date of Issue
    October 28, 2016
    Subject
    Carta de Jamaica 1815