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.

Stamps issued with LK001.15

  1. Lk001.15-80
    Wns Number
    LK001.15
    Country / Post
    Sri Lanka
    Date of Issue
    January 13, 2015
    Subject
    Visit of His Holiness Pope Francis to Sri Lanka
  2. Lk002.15-80
    Wns Number
    LK002.15
    Country / Post
    Sri Lanka
    Date of Issue
    January 13, 2015
    Subject
    Visit of His Holiness Pope Francis to Sri Lanka