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.

IT005.17

Country / Post Italy
Date of Issue 21 March 2017
Primary theme Astronomy & Space (Astronomy)
Subject Excellence in Knowledge - 250th Anniversary of founding of Astronomical Observatory of Padua
Width 40.0 mm
Height 48.0 mm
Denomination 0.95 €
Number in set 1
Layout/Format self adhesive sheet of 28
Perforations 12 by 12
Stamp issuing authority Ministry of Economic Development
Printer IPZS