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 CA123.17

  1. Ca122.17-80
    Wns Number
    CA122.17
    Country / Post
    Canada
    Date of Issue
    October 20, 2017
    Subject
    History of Hockey - Canada - United States joint issue (present)
  2. Ca123.17-80
    Wns Number
    CA123.17
    Country / Post
    Canada
    Date of Issue
    October 20, 2017
    Subject
    History of Hockey - Canada - United States joint issue (past)
  3. Ca124.17-80
    Wns Number
    CA124.17
    Country / Post
    Canada
    Date of Issue
    October 20, 2017
    Subject
    History of Hockey - Canada - United States joint issue (present)
  4. Ca125.17-80
    Wns Number
    CA125.17
    Country / Post
    Canada
    Date of Issue
    October 20, 2017
    Subject
    History of Hockey - Canada - United States joint issue (past)