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 CR002.12

  1. Cr001.12-80
    Wns Number
    CR001.12
    Country / Post
    Costa Rica
    Date of Issue
    May 04, 2012
    Subject
    125th Anniversary of the National Museum
  2. Cr002.12-80
    Wns Number
    CR002.12
    Country / Post
    Costa Rica
    Date of Issue
    May 04, 2012
    Subject
    125th Anniversary of the National Museum