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.

RO020.18

Country / Post Romania
Date of Issue 19 February 2018
Primary theme Post & Philately (Philatelic Exhibitions)
Subject The Infinity column, Tribute to Romanian Heroes - Overprint of the postage stamp issue The International Philatelic Exhibition 'Philexfrance '82'
Width 42.0 mm
Height 55.0 mm
Denomination 31.00 RON
Number in set 1
Layout/Format miniature sheet of 1
Perforations 13 by 13
Stamp issuing authority SC Romfilatelia SA
Printer Fabrica de timbre
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