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. Xc014.18-80
    Wns Number
    XC014.18
    Country / Post
    Andorra (S)
    Date of Issue
    November 08, 2018
    Subject
    Christmas - Popular Scences - Diorama of J. Bofill
  2. Ro168.18-80
    Wns Number
    RO168.18
    Country / Post
    Romania
    Date of Issue
    November 09, 2018
    Subject
    Christmas 2018
  3. Ro169.18-80
    Wns Number
    RO169.18
    Country / Post
    Romania
    Date of Issue
    November 09, 2018
    Subject
    Christmas 2018
  4. Ro170.18-80
    Wns Number
    RO170.18
    Country / Post
    Romania
    Date of Issue
    November 09, 2018
    Subject
    Christmas 2018
  5. Ro171.18-80
    Wns Number
    RO171.18
    Country / Post
    Romania
    Date of Issue
    November 09, 2018
    Subject
    Christmas 2018
  6. Ro172.18-80
    Wns Number
    RO172.18
    Country / Post
    Romania
    Date of Issue
    November 09, 2018
    Subject
    Christmas 2018
  7. Ro173.18-80
    Wns Number
    RO173.18
    Country / Post
    Romania
    Date of Issue
    November 09, 2018
    Subject
    Christmas 2018
  8. Si045.18-80
    Wns Number
    SI045.18
    Country / Post
    Slovenia
    Date of Issue
    November 09, 2018
    Subject
    New Year's Wassailers
  9. Si046.18-80
    Wns Number
    SI046.18
    Country / Post
    Slovenia
    Date of Issue
    November 09, 2018
    Subject
    Nativity of Christ
  10. Sk024.18-80
    Wns Number
    SK024.18
    Country / Post
    Slovakia
    Date of Issue
    November 09, 2018
    Subject
    The Christmas Mail 2018