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.

SM003.14

Country / Post San Marino
Date of Issue 17 March 2014
Primary theme International Organisations
Subject 25th Anniversary of the Foundation of Soroptimist International Single Club San Marino
Width 30.0 mm
Height 40.0 mm
Denomination 0.85 €
Number in set 1
Layout/Format sheet of 12
Perforations 13 by 13.25
Stamp issuing authority République de Saint Marin
Printer Cartor Security Printing