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.

BG003.11

Country / Post Bulgaria
Date of Issue 31 January 2011
Primary theme Medicine
Mankind (Women)
Subject Birth Centenary of Vanga
Width 32.5 mm
Height 43.0 mm
Denomination 0.65 BGL
Number in set 1
Layout/Format sheet of 50
Perforations 12.5 by 12.5
Stamp issuing authority Bulgaria Posts PLC
Printer Bulgarian Philately and Numismatics