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 Colombia in 2011

The 2011 issuing programme is not available.
  1. Co001.11-80
    Wns Number
    CO001.11
    Country / Post
    Colombia
    Date of Issue
    February 10, 2011
    Subject
    HJCK The World in Bogota
  2. Co002.11-80
    Wns Number
    CO002.11
    Country / Post
    Colombia
    Date of Issue
    March 22, 2011
    Subject
    Definitives
  3. Co003.11-80
    Wns Number
    CO003.11
    Country / Post
    Colombia
    Date of Issue
    March 22, 2011
    Subject
    Definitives
  4. Co004.11-80
    Wns Number
    CO004.11
    Country / Post
    Colombia
    Date of Issue
    March 30, 2011
    Subject
    Newspaper - El Catolicismo
  5. Co005.11-80
    Wns Number
    CO005.11
    Country / Post
    Colombia
    Date of Issue
    April 11, 2011
    Subject
    International Year of Biodiversity
  6. Co006.11-80
    Wns Number
    CO006.11
    Country / Post
    Colombia
    Date of Issue
    May 10, 2011
    Subject
    Attorney General of the Nation
  7. Co007.11-80
    Wns Number
    CO007.11
    Country / Post
    Colombia
    Date of Issue
    July 21, 2011
    Subject
    Under 20 FIFA World Cup in Colombia 2011
  8. Co008.11-80
    Wns Number
    CO008.11
    Country / Post
    Colombia
    Date of Issue
    July 27, 2011
    Subject
    Centenary of the Death of Rufino Jose Cuervo
  9. Co009.11-80
    Wns Number
    CO009.11
    Country / Post
    Colombia
    Date of Issue
    August 09, 2011
    Subject
    50th Anniversary of the National Police School Alfonso Lopez Pumarejo
  10. Co010.11-80
    Wns Number
    CO010.11
    Country / Post
    Colombia
    Date of Issue
    August 15, 2011
    Subject
    Departments of Colombia - Norte de Santander