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 "Winter Olympics"

  1. Kr011.18-80
    Wns Number
    KR011.18
    Country / Post
    Korea Republic
    Date of Issue
    February 09, 2018
    Subject
    Celebrating the Opening of PyeongChang 2018
  2. Kr012.18-80
    Wns Number
    KR012.18
    Country / Post
    Korea Republic
    Date of Issue
    February 09, 2018
    Subject
    Celebrating the Opening of PyeongChang 2018
  3. Ro014.18-80
    Wns Number
    RO014.18
    Country / Post
    Romania
    Date of Issue
    February 09, 2018
    Subject
    Winter Olympic Games PyeongChang 2018 - Bobsleigh
  4. Ro015.18-80
    Wns Number
    RO015.18
    Country / Post
    Romania
    Date of Issue
    February 09, 2018
    Subject
    Winter Olympic Games PyeongChang 2018 - Alpine skiing
  5. Ro016.18-80
    Wns Number
    RO016.18
    Country / Post
    Romania
    Date of Issue
    February 09, 2018
    Subject
    Winter Olympic Games PyeongChang 2018 - Cross-country skiing
  6. Ro017.18-80
    Wns Number
    RO017.18
    Country / Post
    Romania
    Date of Issue
    February 09, 2018
    Subject
    Winter Olympic Games PyeongChang 2018 - Ski jumping
  7. Rs002.18-80
    Wns Number
    RS002.18
    Country / Post
    Serbia
    Date of Issue
    February 09, 2018
    Subject
    XXIII Olympic Winter Games PyeonChang 2018
  8. Rs003.18-80
    Wns Number
    RS003.18
    Country / Post
    Serbia
    Date of Issue
    February 09, 2018
    Subject
    XXIII Olympic Winter Games PyeonChang 2018
  9. Kg019.18-80
    Wns Number
    KG019.18
    Country / Post
    Kyrgyzstan/Kyrgyz Post
    Date of Issue
    February 22, 2018
    Subject
    The XXIII Olympic Winter Games in Pyongchang, South Korea - Ski jumping
  10. Kg020.18-80
    Wns Number
    KG020.18
    Country / Post
    Kyrgyzstan/Kyrgyz Post
    Date of Issue
    February 22, 2018
    Subject
    The XXIII Olympic Winter Games in Pyongchang, South Korea - Figure skating