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.

SM016.14

Country / Post San Marino
Date of Issue 5 June 2014
Primary theme Sport (Motor racing)
Subject 20th Anniversary of the Death of Ayrton Senna
Width 40.0 mm
Height 30.0 mm
Denomination 2.50 €
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