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 SI033.18

  1. Si032.18-80
    Wns Number
    SI032.18
    Country / Post
    Slovenia
    Date of Issue
    September 28, 2018
    Subject
    Endangered Mammals - Eurasian Lynx (Lynx lynx)
  2. Si033.18-80
    Wns Number
    SI033.18
    Country / Post
    Slovenia
    Date of Issue
    September 28, 2018
    Subject
    Endangered Mammals - Mountain Hare (Lepus timidus)
  3. Si034.18-80
    Wns Number
    SI034.18
    Country / Post
    Slovenia
    Date of Issue
    September 28, 2018
    Subject
    Endangered Mammals - Mediterranean Water Shrew (Neomys anomalus)
  4. Si035.18-80
    Wns Number
    SI035.18
    Country / Post
    Slovenia
    Date of Issue
    September 28, 2018
    Subject
    Endangered Mammals - Otter (Lutra lutra)
  5. Si036.18-80
    Wns Number
    SI036.18
    Country / Post
    Slovenia
    Date of Issue
    September 28, 2018
    Subject
    Endangered Mammals - Weasel (Mustela nivalis)