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 Sudan in 2013

The 2013 issuing programme is not available.
  1. Sd001.13-80
    Wns Number
    SD001.13
    Country / Post
    Sudan
    Date of Issue
    January 06, 2013
    Subject
    Roseires Heightening Dam Project
  2. Sd002.13-80
    Wns Number
    SD002.13
    Country / Post
    Sudan
    Date of Issue
    January 06, 2013
    Subject
    Roseires Heightening Dam Project
  3. Sd003.13-80
    Wns Number
    SD003.13
    Country / Post
    Sudan
    Date of Issue
    January 06, 2013
    Subject
    Roseires Heightening Dam Project
  4. Sd004.13-80
    Wns Number
    SD004.13
    Country / Post
    Sudan
    Date of Issue
    January 06, 2013
    Subject
    Roseires Heightening Dam Project