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. Gr051.18-80
    Wns Number
    GR051.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Santa reads children's letters
  2. Gr052.18-80
    Wns Number
    GR052.18
    Country / Post
    Greece
    Date of Issue
    November 23, 2018
    Subject
    Christmas 2018 - Posting Santa's letter
  3. Hr047.18-80
    Wns Number
    HR047.18
    Country / Post
    Croatia
    Date of Issue
    November 26, 2018
    Subject
    Christmas 2018
  4. Bg036.18-80
    Wns Number
    BG036.18
    Country / Post
    Bulgaria
    Date of Issue
    November 28, 2018
    Subject
    Christmas 2018
  5. It054.18-80
    Wns Number
    IT054.18
    Country / Post
    Italy
    Date of Issue
    December 01, 2018
    Subject
    Holidays - Religious and Secular Christmas celebrations - Madonna with the Child Jesus and Saints
  6. It055.18-80
    Wns Number
    IT055.18
    Country / Post
    Italy
    Date of Issue
    December 01, 2018
    Subject
    Holidays - Religious and Secular Christmas celebrations - Family Christmas
  7. Xj027.18-80
    Wns Number
    XJ027.18
    Country / Post
    Bosnia and Herzegovina - Croatian Post Ltd Mostar
    Date of Issue
    December 01, 2018
    Subject
    Christmas 2018 and the New Year
  8. Xj028.18-80
    Wns Number
    XJ028.18
    Country / Post
    Bosnia and Herzegovina - Croatian Post Ltd Mostar
    Date of Issue
    December 01, 2018
    Subject
    Christmas 2018 and the New Year
  9. Lu025.18-80
    Wns Number
    LU025.18
    Country / Post
    Luxembourg
    Date of Issue
    December 04, 2018
    Subject
    Christmas 2018 - The end-of-year festivities
  10. Lu026.18-80
    Wns Number
    LU026.18
    Country / Post
    Luxembourg
    Date of Issue
    December 04, 2018
    Subject
    Christmas 2018 - The end-of-year festivities