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.

RO100.17

Country / Post Romania
Date of Issue 26 July 2017
Primary theme Transportation (Rail) (Locomotive & trains)
Subject Welcome to Romania - Mocăniţa, a narrow-gauge railway
Width 33.0 mm
Height 48.0 mm
Denomination 4.50 RON
Number in set 12 (show set)
Layout/Format miniature sheet of 6 of 6 designs
Perforations imperforate
Stamp issuing authority SC Romfilatelia SA
Printer Fabrica de timbre
Connect to the web shop of the issuing stamp authority