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.

BG021.09

Country / Post Bulgaria
Date of Issue 9 April 2009
Primary theme Astronomy & Space (Astronauts & Cosmonauts)
Subject 30th Anniversary of the Flight of Bulgarian Astronaut Georgi Ivanov into Space
Width 54.0 mm
Height 29.0 mm
Denomination 0.60 BGL
Number in set 1
Layout/Format miniature sheet of 1
Perforations 13 by 13
Stamp issuing authority Bulgaria Posts PLC
Printer Bulgarian Philately and Numismatics