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 2012 with theme "Olympic Games"

The 2012 issuing programme is not available.
  1. Co041.12-80
    Wns Number
    CO041.12
    Country / Post
    Colombia
    Date of Issue
    December 18, 2012
    Subject
    Colombian Medallists at London 2012
  2. Co040.12-80
    Wns Number
    CO040.12
    Country / Post
    Colombia
    Date of Issue
    December 18, 2012
    Subject
    Colombian Medallists at London 2012
  3. Co010.12-80
    Wns Number
    CO010.12
    Country / Post
    Colombia
    Date of Issue
    June 27, 2012
    Subject
    Colombia in London
  4. Co009.12-80
    Wns Number
    CO009.12
    Country / Post
    Colombia
    Date of Issue
    June 27, 2012
    Subject
    Colombia in London
  5. Co008.12-80
    Wns Number
    CO008.12
    Country / Post
    Colombia
    Date of Issue
    June 27, 2012
    Subject
    Colombia in London
  6. Co007.12-80
    Wns Number
    CO007.12
    Country / Post
    Colombia
    Date of Issue
    June 27, 2012
    Subject
    Colombia in London