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.

SM015.06

Country / Post San Marino
Date of Issue 5 April 2006
Primary theme Architecture (Classical)
Subject Joint issue Italy-San Marino - "Two Republics"
Width 40.0 mm
Height 30.0 mm
Denomination 0.62 €
Number in set 2 (show set)
Layout/Format miniature sheet of 2 of 2 designs
Perforations 13 by 13
Stamp issuing authority République de Saint Marin
Printer Officina Carte Valori of the Istituto