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 PY001.08

  1. Py001.08-80
    Wns Number
    PY001.08
    Country / Post
    Paraguay
    Date of Issue
    April 01, 2008
    Subject
    40th Anniversary of Publicitaria Nasta
  2. Py002.08-80
    Wns Number
    PY002.08
    Country / Post
    Paraguay
    Date of Issue
    April 01, 2008
    Subject
    40th Anniversary of Publicitaria Nasta