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.

PY015.04

Country / Post Paraguay
Date of Issue 22 September 2004
Primary theme Transportation (Rail) (Steam engines)
Subject Paraguayan Railroad - Loc.151 (N.B.L.) - 1911 'Camello'
Width 35.0 mm
Height 45.0 mm
Denomination 2000 PYG
Number in set 3 (show set)
Layout/Format sheet of 25
Perforations 13.5 by 13.5
Stamp issuing authority Correo Paraguayo
Printer Fiscal Assets Department - Asunción