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.

All registered stamps issued by Paraguay in 2005

The 2005 issuing programme is not available.
  1. Py031.05-80
    Wns Number
    PY031.05
    Country / Post
    Paraguay
    Date of Issue
    December 28, 2005
    Subject
    Overprint - Homage to Pope John Paul II
  2. Py032.05-80
    Wns Number
    PY032.05
    Country / Post
    Paraguay
    Date of Issue
    December 28, 2005
    Subject
    Overprint - World Summit on the Information society (WSIS)
  3. Py033.05-80
    Wns Number
    PY033.05
    Country / Post
    Paraguay
    Date of Issue
    December 28, 2005
    Subject
    Overprint - World Summit on the Information society (WSIS)