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.

SM004.17

Country / Post San Marino
Date of Issue 7 March 2017
Primary theme Religions & beliefs (Christianity)
Subject 100th Anniversary of the Apparitions of Fatima - Basilica of Fatima
Width 30.0 mm
Height 40.0 mm
Denomination 1.00 €
Number in set 2 (show set)
Layout/Format sheet of 20
Perforations 13.25 by 13
Stamp issuing authority République de Saint Marin
Printer Cartor Security Printing