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.

BG036.18

Country / Post Bulgaria
Date of Issue 28 November 2018
Primary theme Holy Days & Celebrations (Christmas & Easter)
Subject Christmas 2018
Width 29.0 mm
Height 54.0 mm
Denomination 1.50 BGN
Number in set 1
Layout/Format sheet of 40
Perforations 13 by 13
Stamp issuing authority Ministry of Transport, Information Technologies & Communications
Printer Bulgarska Philatelia & Numismatika