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.

MC050.09

Country / Post Monaco
Date of Issue 4 December 2009
Primary theme Music & Dance (Musicians & Conductors)
Subject 150th Anniversary of Birth of Gustav Mahler
Width 40.0 mm
Height 52.0 mm
Denomination 0.90 €
Number in set 1
Layout/Format sheet of 6
Perforations 13 by 13
Stamp issuing authority Office des Emissions de Timbres-poste, Principauté de Monaco
Printer philaposte France
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