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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)

Sponsors

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

    © Copyright UPU - WADP

    The stamp designs are the property of their respective issuing postal authority.

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

    There are 91374 registered stamps

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