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.

PT045.19

Country / Post Portugal
Date of Issue 5 April 2019
Primary theme Fine Arts (Museums and Art Galleries)
Subject Centenary Museums of Portugal - Municipal Museum of Faro (1894)
Width 40.0 mm
Height 30.6 mm
Denomination N 20g
Number in set 13 (show set)
Layout/Format sheet of 52 of 13 designs
Perforations 12.25 by 12
Stamp issuing authority CTT Correios de Portugal SA
Printer bpost
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