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 YT007.04

  1. Yt006.04-80
    Wns Number
    YT006.04
    Country / Post
    Mayotte
    Date of Issue
    April 05, 2004
    Subject
    Butterflies - Papilio demodocus
  2. Yt007.04-80
    Wns Number
    YT007.04
    Country / Post
    Mayotte
    Date of Issue
    April 05, 2004
    Subject
    Butterflies - Junonia rhadama
  3. Yt008.04-80
    Wns Number
    YT008.04
    Country / Post
    Mayotte
    Date of Issue
    April 05, 2004
    Subject
    Butterflies - Acraea ranavalona
  4. Yt009.04-80
    Wns Number
    YT009.04
    Country / Post
    Mayotte
    Date of Issue
    April 05, 2004
    Subject
    Butterflies - Danaus chrysippus