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.

SM004.06

Country / Post San Marino
Date of Issue 1 February 2006
Primary theme Politics & Government
Religions & beliefs (Christianity)
Subject 100th Anniversary of Arengo of Patriarchs
Width 30.0 mm
Height 40.0 mm
Denomination 0.62 €
Number in set 3 (show set)
Layout/Format sheet of 16
Perforations 13 by 13
Stamp issuing authority République de Saint Marin
Printer Cartor Security Printing