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 Mexico in 2011

The 2011 issuing programme is not available.
  1. Mx061.11-80
    Wns Number
    MX061.11
    Country / Post
    Mexico
    Date of Issue
    December 07, 2011
    Subject
    National Award for Voluntary Action and Solidairty
  2. Mx062.11-80
    Wns Number
    MX062.11
    Country / Post
    Mexico
    Date of Issue
    December 08, 2011
    Subject
    Mexican Cities on World Heritage List
  3. Mx063.11-80
    Wns Number
    MX063.11
    Country / Post
    Mexico
    Date of Issue
    December 16, 2011
    Subject
    50 Years of the National Medical Centre