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.


Country / Post San Marino
Date of Issue 9 February 2010
Primary theme Architecture (Classical)
Exhibitions, Fairs & Carnivals (Exhibitions)
Subject San Marino at the Expo 2010 Shanghai - the City State
Width 30.0 mm
Height 40.0 mm
Denomination 1.50 €
Number in set 4 (show set)
Layout/Format miniature sheet of 4 of 4 designs
Perforations 13 by 13.25
Stamp issuing authority République de Saint Marin
Printer Cartor Security Printing