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.

LI012.10

Country / Post Liechtenstein
Date of Issue 1 May 2010
Primary theme Exhibitions, Fairs & Carnivals (Exhibitions)
Fine Arts (Painting)
Subject Expo 2010 Shanghai China
Width 31.5 mm
Height 59.5 mm
Denomination 1.90 CHF
Number in set 2 (show set)
Layout/Format miniature sheet of 2 of 2 designs
Perforations 14 by 14
Stamp issuing authority Liechtensteinische Post AG
Printer Österreichische Staatsdruckerei GmbH
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