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.

SM008.08

Country / Post San Marino
Date of Issue 26 February 2008
Primary theme Environment & Conservation
Subject International Year of Planet Earth
Width 40.0 mm
Height 30.0 mm
Denomination 0.85 €
Number in set 4 (show set)
Layout/Format sheet of 16
Perforations 13.25 by 13.25
Stamp issuing authority République de Saint Marin
Printer Cartor Security Printing