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.

GR010.15

Country / Post Greece
Date of Issue 26 February 2015
Primary theme History (Archeology)
Minerology & Geology (Mountains & Geological features)
Subject Thermal Springs of Greece - Loutraki of Aridaia
Width 50.0 mm
Height 27.0 mm
Denomination 0.90 €
Number in set 6 (show set)
Layout/Format sheet of 25
Perforations 13.5 by 13.5
Stamp issuing authority Hellenic Post
Printer Joh Enschedé Security Printers
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