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 by Sri Lanka in 2015

The 2015 issuing programme is not available.
  1. Lk031.15-80
    Wns Number
    LK031.15
    Country / Post
    Sri Lanka
    Date of Issue
    December 14, 2015
    Subject
    150th Anniversary of Colombo Municipal Council
  2. Lk032.15-80
    Wns Number
    LK032.15
    Country / Post
    Sri Lanka
    Date of Issue
    December 30, 2015
    Subject
    Davuldena Sri Gnanissara Mahanayake Thero

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