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. Py026.18-80
    Wns Number
    PY026.18
    Country / Post
    Paraguay
    Date of Issue
    November 22, 2018
    Subject
    Christmas 2018
  2. Py027.18-80
    Wns Number
    PY027.18
    Country / Post
    Paraguay
    Date of Issue
    November 22, 2018
    Subject
    Christmas 2018
  3. Gr047.18-80
    Wns Number
    GR047.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Letter to Santa
  4. Gr048.18-80
    Wns Number
    GR048.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Santa reads children's letters
  5. Gr049.18-80
    Wns Number
    GR049.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Posting Santa's letter
  6. Gr050.18-80
    Wns Number
    GR050.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Christmas presents
  7. Gr051.18-80
    Wns Number
    GR051.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Santa reads children's letters
  8. Gr052.18-80
    Wns Number
    GR052.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Posting Santa's letter
  9. Lt033.18-80
    Wns Number
    LT033.18
    Country / Post
    Lithuania
    Date of Issue
    November 23, 2018
    Subject
    Holy Christmas and New Year - Cookie
  10. Lt034.18-80
    Wns Number
    LT034.18
    Country / Post
    Lithuania
    Date of Issue
    November 23, 2018
    Subject
    Holy Christmas and New Year - Orange