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 LK050.07

  1. Lk049.07-80
    Wns Number
    LK049.07
    Country / Post
    Sri Lanka
    Date of Issue
    October 31, 2007
    Subject
    Udawalawa National Park - Water Buffaloes
  2. Lk050.07-80
    Wns Number
    LK050.07
    Country / Post
    Sri Lanka
    Date of Issue
    October 31, 2007
    Subject
    Udawalawa National Park - Common Langur
  3. Lk051.07-80
    Wns Number
    LK051.07
    Country / Post
    Sri Lanka
    Date of Issue
    October 31, 2007
    Subject
    Udawalawa National Park - Ruddy Mongoose
  4. Lk052.07-80
    Wns Number
    LK052.07
    Country / Post
    Sri Lanka
    Date of Issue
    October 31, 2007
    Subject
    Udawalawa National Park - Herd of Elephant