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 GR031.18

  1. Gr030.18-80
    Wns Number
    GR030.18
    Country / Post
    Greece
    Date of Issue
    July 20, 2018
    Subject
    EuroMed - Houses in the Mediterranean - A Mansion in Pelion
  2. Gr031.18-80
    Wns Number
    GR031.18
    Country / Post
    Greece
    Date of Issue
    July 20, 2018
    Subject
    EuroMed - Houses in the Mediterranean - A Tower in Mani
  3. Gr032.18-80
    Wns Number
    GR032.18
    Country / Post
    Greece
    Date of Issue
    July 20, 2018
    Subject
    EuroMed - Houses in the Mediterranean - A Cycladic house
  4. Gr033.18-80
    Wns Number
    GR033.18
    Country / Post
    Greece
    Date of Issue
    July 20, 2018
    Subject
    EuroMed - Houses in the Mediterranean - A House in the Dodecanese