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 Costa Rica in 2018

The 2018 issuing programme is not available.
  1. Cr001.18-80
    Wns Number
    CR001.18
    Country / Post
    Costa Rica
    Date of Issue
    March 05, 2018
    Subject
    Higher Education - 50th anniversary of the School of Collective Communication Sciences and 75th anniversary of the Faculty of Economic Sciences of the University of Costa Rica
  2. Cr002.18-80
    Wns Number
    CR002.18
    Country / Post
    Costa Rica
    Date of Issue
    April 04, 2018
    Subject
    National writers - Fabián Dobles R. 1918-1997
  3. Cr003.18-80
    Wns Number
    CR003.18
    Country / Post
    Costa Rica
    Date of Issue
    April 04, 2018
    Subject
    National writers - Joaquín Gutiérrez M. 1918-2000

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