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 Benin in 2004

The 2004 issuing programme is not available.
  1. Bj001.04-80
    Wns Number
    BJ001.04
    Country / Post
    Benin
    Date of Issue
    August 31, 2004
    Subject
    Fight against Children Trafficking
  2. Bj002.04-80
    Wns Number
    BJ002.04
    Country / Post
    Benin
    Date of Issue
    August 31, 2004
    Subject
    Fight against Children Trafficking
  3. Bj003.04-80
    Wns Number
    BJ003.04
    Country / Post
    Benin
    Date of Issue
    August 31, 2004
    Subject
    Fight against Children Trafficking
  4. Bj004.04-80
    Wns Number
    BJ004.04
    Country / Post
    Benin
    Date of Issue
    August 31, 2004
    Subject
    Fight against Children Trafficking