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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.

WADP Numbering System (WNS)

WADP Numbering System (WNS)

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Sponsors

  • Federation Internationale de Philatelie
  • The International Federation of Stamp Dealers Associations
  • AIJP
  • Association Internationale des Editeurs de catalogues
  • Intergraf

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    The issuing postal authorities have allowed the reproduction of the stamps displayed on this website.

    There are 82246 registered stamps

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