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 XB001.19

  1. Xb001.19-80
    Wns Number
    XB001.19
    Country / Post
    Madeira
    Date of Issue
    May 09, 2019
    Subject
    EUROPA 2019 - National Birds - Atlantic canary (Serinus canaria)
  2. Xb002.19-80
    Wns Number
    XB002.19
    Country / Post
    Madeira
    Date of Issue
    May 09, 2019
    Subject
    EUROPA 2019 - National Birds - Goldfinch (Carduelis carduelis)