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.

BG007.08

Country / Post Bulgaria
Date of Issue 22 April 2008
Primary theme EUROPA
Subject Europa 2008 - The Letter
Width 50.0 mm
Height 30.0 mm
Denomination 0.55 BGL
Number in set 2 (show set)
Layout/Format sheet of 4, booklet of 4
Perforations 13 by 13
Stamp issuing authority Bulgaria Posts PLC
Printer Bulgarian Philately and Numismatics