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.

BG010.18

Country / Post Bulgaria
Date of Issue 16 May 2018
Primary theme International Organisations (European Union)
Subject Bulgarian Presidency of the Council of the EU
Width 29.0 mm
Height 44.0 mm
Denomination 1.50 BGN
Number in set 1
Layout/Format sheet of 50
Perforations 13 by 13
Stamp issuing authority Bulgaria Posts PLC
Printer Bulgarian Philately and Numismatics