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 Mayotte in 2006

Show issuing programme...
  1. Yt011.06-80
    Wns Number
    YT011.06
    Country / Post
    Mayotte
    Date of Issue
    November 20, 2006
    Subject
    Phaeton