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 in 2011 with theme "Orchids"

  1. By002.11-80
    Wns Number
    BY002.11
    Country / Post
    Belarus
    Date of Issue
    January 10, 2011
    Subject
    Flora - Endangered plants of Belarus - Orchis ustulata
  2. La017.11-80
    Wns Number
    LA017.11
    Country / Post
    Lao People's Democratic Republic
    Date of Issue
    May 22, 2011
    Subject
    Wild Orchids - Paphiopedilum barbigerum
  3. La018.11-80
    Wns Number
    LA018.11
    Country / Post
    Lao People's Democratic Republic
    Date of Issue
    May 22, 2011
    Subject
    Wild Orchids - Paphiopedilum barbigerum
  4. La019.11-80
    Wns Number
    LA019.11
    Country / Post
    Lao People's Democratic Republic
    Date of Issue
    May 22, 2011
    Subject
    Wild Orchids - Paphiopedilum barbigerum
  5. Th045.11-80
    Wns Number
    TH045.11
    Country / Post
    Thailand
    Date of Issue
    June 02, 2011
    Subject
    Orchids - Den. Suree Peach
  6. Th046.11-80
    Wns Number
    TH046.11
    Country / Post
    Thailand
    Date of Issue
    June 02, 2011
    Subject
    Orchids - Den. Lai Sirin
  7. Th047.11-80
    Wns Number
    TH047.11
    Country / Post
    Thailand
    Date of Issue
    June 02, 2011
    Subject
    Orchids - Den. Cheetah
  8. Th048.11-80
    Wns Number
    TH048.11
    Country / Post
    Thailand
    Date of Issue
    June 02, 2011
    Subject
    Orchids - Den. Cherluk Red
  9. Br018.11-80
    Wns Number
    BR018.11
    Country / Post
    Brazil
    Date of Issue
    July 06, 2011
    Subject
    Tribute to Tijuca National Park
  10. Pe034.11-80
    Wns Number
    PE034.11
    Country / Post
    Peru
    Date of Issue
    July 19, 2011
    Subject
    Endangered species - Orchids - Maxillaria pyhalae