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.

XC002.13

Country / Post Andorra (S)
Date of Issue 21 February 2013
Primary theme Engineering (Civil & Mechanical)
Subject Opening of the Road between Andorra and La Seu d'Urgell 1913
Width 40.9 mm
Height 28.8 mm
Denomination 0.75 €
Number in set 1
Layout/Format sheet of 50
Perforations 13.75 by 13.75
Stamp issuing authority Correos Y Telegrafos SA
Printer RCM-FNMT
Connect to the web shop of the issuing stamp authority