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.

BG006.08

Country / Post Bulgaria
Date of Issue 29 February 2008
Primary theme National symbols (Coats of Arms)
Politics & Government (Independence)
Subject 130 Years of the San Stephano Peace Treaty and Liberation of the Bulgarian State
Width 33.0 mm
Height 43.0 mm
Denomination 0.55 BGL
Number in set 1
Layout/Format sheet of 50
Perforations 13 by 13
Stamp issuing authority Bulgaria Posts PLC
Printer Bulgarian Philately and Numismatics