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 PY003.17

  1. Py001.17-80
    Wns Number
    PY001.17
    Country / Post
    Paraguay
    Date of Issue
    March 13, 2017
    Subject
    Annual Meeting of the Boards of Governors - IDB - IIC - Paraguay 2017
  2. Py002.17-80
    Wns Number
    PY002.17
    Country / Post
    Paraguay
    Date of Issue
    March 13, 2017
    Subject
    Annual Meeting of the Boards of Governors - IDB - IIC - Paraguay 2017
  3. Py003.17-80
    Wns Number
    PY003.17
    Country / Post
    Paraguay
    Date of Issue
    March 13, 2017
    Subject
    Annual Meeting of the Boards of Governors - IDB - IIC - Paraguay 2017