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.

All registered stamps issued in 2018 with theme "Christmas & Easter"

  1. Mx042.18-80
    Wns Number
    MX042.18
    Country / Post
    Mexico
    Date of Issue
    December 14, 2018
    Subject
    Mexican Christmas
  2. Mx043.18-80
    Wns Number
    MX043.18
    Country / Post
    Mexico
    Date of Issue
    December 14, 2018
    Subject
    Mexican Christmas
  3. Ua085.18-80
    Wns Number
    UA085.18
    Country / Post
    Ukraine
    Date of Issue
    December 19, 2018
    Subject
    St. Nicolas
  4. Bb010.18-80
    Wns Number
    BB010.18
    Country / Post
    Barbados
    Date of Issue
    December 20, 2018
    Subject
    150th Anniversary of the Royal Commonwealth Society - Christmas in the Square
  5. Bb012.18-80
    Wns Number
    BB012.18
    Country / Post
    Barbados
    Date of Issue
    December 20, 2018
    Subject
    150th Anniversary of the Royal Commonwealth Society - Christmas in the Square
  6. Am039.18-80
    Wns Number
    AM039.18
    Country / Post
    Armenia
    Date of Issue
    December 28, 2018
    Subject
    Christmas and New Year