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 GT004.15

  1. Gt003.15-80
    Wns Number
    GT003.15
    Country / Post
    Guatemala
    Date of Issue
    April 24, 2015
    Subject
    Bicentenary of the Metropolitan Cathedral of Guatemala city
  2. Gt004.15-80
    Wns Number
    GT004.15
    Country / Post
    Guatemala
    Date of Issue
    April 24, 2015
    Subject
    Bicentenary of the Metropolitan Cathedral of Guatemala city
  3. Gt005.15-80
    Wns Number
    GT005.15
    Country / Post
    Guatemala
    Date of Issue
    April 24, 2015
    Subject
    Bicentenary of the Metropolitan Cathedral of Guatemala city