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.

US098.16

Country / Post United States of America
Date of Issue 2 August 2016
Primary theme Fauna (Marine fauna)
Subject Pets - Hermit crab
Width 30.0 mm
Height 23.0 mm
Denomination Forever
Number in set 20 (show set)
Layout/Format self adhesive booklet of 20 of 20 designs
Perforations 12 by imperf
Stamp issuing authority United States Postal Service
Printer