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.

AU028.17

Country / Post Australia
Date of Issue 24 May 2017
Primary theme Politics & Government (Law)
Subject 1967 Referendum
Width 26.0 mm
Height 37.5 mm
Denomination 1.00 AUD
Number in set 1
Layout/Format sheet of 10
Perforations 14.6 by 13.86
Stamp issuing authority Australia Post
Printer RA Printing
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