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.

BG008.18

Country / Post Bulgaria
Date of Issue 25 April 2018
Primary theme Engineering (Bridges)
EUROPA
Subject EUROPA 2018 - Bridges
Width 44.0 mm
Height 29.0 mm
Denomination 0.95 BGN
Number in set 2 (show set)
Layout/Format miniature sheet of 2 of 2 designs
Perforations 13 by 13
Stamp issuing authority Bulgaria Posts PLC
Printer Bulgarian Philately and Numismatics