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 SG044.02

  1. Sg043.02-80
    Wns Number
    SG043.02
    Country / Post
    Singapore
    Date of Issue
    September 25, 2002
    Subject
    Heritage Trees - Flame of the Forest (Delonix regia)
  2. Sg044.02-80
    Wns Number
    SG044.02
    Country / Post
    Singapore
    Date of Issue
    September 25, 2002
    Subject
    Heritage Trees - Rain Tree (Samanea saman)
  3. Sg045.02-80
    Wns Number
    SG045.02
    Country / Post
    Singapore
    Date of Issue
    September 25, 2002
    Subject
    Heritage Trees - Tembusu (Fagraea fragrans)
  4. Sg046.02-80
    Wns Number
    SG046.02
    Country / Post
    Singapore
    Date of Issue
    September 25, 2002
    Subject
    Heritage Trees - Kapok Tree (Celba pentandra)