Universal Postal Union - Philatelic Activities

Philatelic Activities

The Universal Postal Union, in conjunction with the World Association for the Development of Philately, developed the WADP Numbering System (WNS). It was launched on January 1, 2002. The website displays entries for some 160 countries and emitting postal entities, with over 25,000 registered stamps since 2002. Many of them have images, which generally remain copyrighted by the issuing country, but the UPU and WADP permit them to be downloaded.

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