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.


Country / Post Ecuador
Date of Issue 8 April 2008
Primary theme Transportation (Ships & Navigation) (Ships)
Subject 50 Years of Guayaquil Harbour Authority
Width 35.0 mm
Height 55.0 mm
Denomination 0.20 USD
Number in set 1
Layout/Format sheet
Perforations 12 by 12
Stamp issuing authority Unidad Postal Nuevos Correos del Ecuador