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.

US004.19

Country / Post United States of America
Date of Issue 27 January 2019
Primary theme Fine Arts (Sculpture)
Architecture (Classical)
Subject Bethesda Fountain
Width 40.0 mm
Height 32.0 mm
Denomination 25.50 USD
Number in set 2 (show set)
Layout/Format self adhesive sheet of 4
Perforations 11 by 11
Stamp issuing authority United States Postal Service
Printer