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 Tanzania
Date of Issue 30 June 2002
Primary theme Minerology & Geology
Subject Tanzanian mountains - Usambara Mountains
Width 37.5 mm
Height 26.0 mm
Denomination 350 TZS
Number in set 5 (show set)
Layout/Format sheet
Perforations 13.7 by 14
Stamp issuing authority Tanzania Posts Corporation
Printer Enschede Stamps, Netherlands