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.

PT092.17

Country / Post Portugal
Date of Issue 25 August 2017
Primary theme Theatre & Cinema (Films & film stars)
Subject 40 Years of Star Wars - Darth Vader
Width 39.0 mm
Height 30.0 mm
Denomination I20g
Number in set 15 (show set)
Layout/Format self adhesive booklet of 6 of 6 designs
Perforations 11.75 by 11.75
Stamp issuing authority CTT Correios de Portugal SA
Printer bpost
Connect to the web shop of the issuing stamp authority