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.

SI001.18

Country / Post Slovenia
Date of Issue 26 January 2018
Primary theme Holy Days & Celebrations (Personal greetings)
Subject Greetings Stamp - Serenade
Width 44.0 mm
Height 44.0 mm
Denomination 0.48 €
Number in set 1
Layout/Format sheet of 10
Perforations 14 by 14
Stamp issuing authority Post of Slovenia
Printer Joh Enschedé Security Printers
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