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.

US002.10

Country / Post United States of America
Date of Issue 22 January 2010
Primary theme Olympic Games (Winter Olympics)
Subject Vancouver 2010 Olympic Winter Games
Width 25.0 mm
Height 40.0 mm
Denomination 0.44 USD
Number in set 1
Layout/Format self adhesive sheet of 20
Perforations 11 by 11
Stamp issuing authority United States Postal Service
Printer