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 2004

The 2004 issuing programme is not available.
  1. Py001.04-80
    Wns Number
    PY001.04
    Country / Post
    Paraguay
    Date of Issue
    May 27, 2004
    Subject
    Comics by Robin Wood
  2. Py002.04-80
    Wns Number
    PY002.04
    Country / Post
    Paraguay
    Date of Issue
    May 27, 2004
    Subject
    Comics by Robin Wood
  3. Py003.04-80
    Wns Number
    PY003.04
    Country / Post
    Paraguay
    Date of Issue
    May 27, 2004
    Subject
    Comics by Robin Wood
  4. Py004.04-80
    Wns Number
    PY004.04
    Country / Post
    Paraguay
    Date of Issue
    June 05, 2004
    Subject
    Centennial Celebration of Club Nacional
  5. Py005.04-80
    Wns Number
    PY005.04
    Country / Post
    Paraguay
    Date of Issue
    July 02, 2004
    Subject
    Colegio San Jose Centennial
  6. Py006.04-80
    Wns Number
    PY006.04
    Country / Post
    Paraguay
    Date of Issue
    July 06, 2004
    Subject
    Pablo Neruda's Centennial
  7. Py007.04-80
    Wns Number
    PY007.04
    Country / Post
    Paraguay
    Date of Issue
    July 07, 2004
    Subject
    Paraguayan Guarani World
  8. Py008.04-80
    Wns Number
    PY008.04
    Country / Post
    Paraguay
    Date of Issue
    July 07, 2004
    Subject
    Paraguayan Guarani World
  9. Py009.04-80
    Wns Number
    PY009.04
    Country / Post
    Paraguay
    Date of Issue
    August 13, 2004
    Subject
    Independence House
  10. Py010.04-80
    Wns Number
    PY010.04
    Country / Post
    Paraguay
    Date of Issue
    August 13, 2004
    Subject
    Independence House