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 NI001.06

  1. Ni001.06-80
    Wns Number
    NI001.06
    Country / Post
    Nicaragua
    Date of Issue
    February 08, 2006
    Subject
    International Poetry Festival
  2. Ni002.06-80
    Wns Number
    NI002.06
    Country / Post
    Nicaragua
    Date of Issue
    February 08, 2006
    Subject
    International Poetry Festival
  3. Ni003.06-80
    Wns Number
    NI003.06
    Country / Post
    Nicaragua
    Date of Issue
    February 08, 2006
    Subject
    International Poetry Festival
  4. Ni004.06-80
    Wns Number
    NI004.06
    Country / Post
    Nicaragua
    Date of Issue
    February 08, 2006
    Subject
    International Poetry Festival