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 PY006.08

  1. Py005.08-80
    Wns Number
    PY005.08
    Country / Post
    Paraguay
    Date of Issue
    July 10, 2008
    Subject
    Mercosur - Native Birds - Aranguyra
  2. Py006.08-80
    Wns Number
    PY006.08
    Country / Post
    Paraguay
    Date of Issue
    July 10, 2008
    Subject
    Mercosur - Native Birds - Pitogue