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 PY006.17

  1. Py004.17-80
    Wns Number
    PY004.17
    Country / Post
    Paraguay
    Date of Issue
    March 28, 2017
    Subject
    Cactuses and Wild Butterflies of Paraguay - Cereus forbesii
  2. Py005.17-80
    Wns Number
    PY005.17
    Country / Post
    Paraguay
    Date of Issue
    March 28, 2017
    Subject
    Cactuses and Wild Butterflies of Paraguay - Agraulis vanillae
  3. Py006.17-80
    Wns Number
    PY006.17
    Country / Post
    Paraguay
    Date of Issue
    March 28, 2017
    Subject
    Cactuses and Wild Butterflies of Paraguay - Echinopsis rhodotricha
  4. Py007.17-80
    Wns Number
    PY007.17
    Country / Post
    Paraguay
    Date of Issue
    March 28, 2017
    Subject
    Cactuses and Wild Butterflies of Paraguay - Euryades duponcheli
  5. Py008.17-80
    Wns Number
    PY008.17
    Country / Post
    Paraguay
    Date of Issue
    March 28, 2017
    Subject
    Cactus and Wild Butterflies of Paraguay - Harrisia bonplandii
  6. Py009.17-80
    Wns Number
    PY009.17
    Country / Post
    Paraguay
    Date of Issue
    March 28, 2017
    Subject
    Cactuses and Wild Butterflies of Paraguay - Euryades duponcheli