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.


Country / Post Portugal
Date of Issue 31 January 2018
Primary theme Agriculture & Food (Food & Cooking)
Subject Traditional Sweets of Portugal II - Crista de Galo de Vila Real
Width 28.5 mm
Height 24.5 mm
Denomination A20g
Number in set 4 (show set)
Layout/Format self adhesive sheet of 50
Perforations 11 by 11
Stamp issuing authority CTT Correios de Portugal SA
Printer Cartor Security Printing
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