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.

BG017.09

Country / Post Bulgaria
Date of Issue 31 March 2009
Primary theme Transportation (Road) (Cycles)
Subject Transport - Bicycles
Width 33.0 mm
Height 43.0 mm
Denomination 0.50 BGL
Number in set 5 (show set)
Layout/Format sheet of 16
Perforations 13 by 13
Stamp issuing authority Bulgaria Posts PLC
Printer Bulgarian Philately and Numismatics