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.

XI007.07

Country / Post Montenegro
Date of Issue 11 May 2007
Primary theme Fauna (Birds - General)
Subject Grey Gull
Width 27.5 mm
Height 42.0 mm
Denomination 0.25 €
Number in set 2 (show set)
Layout/Format sheet of 20
Perforations 14 by 14
Stamp issuing authority Montenegro Post
Printer Magyar SZO DOO Novi Sad Serbia