Official Numbering Systems
In general, governments have not tried to number their own stamps. The People's Republic of China is a notable exception, having inscribed most of its stamps with a unique numbering system since 1949.
In 2002, as part of efforts to control allegedly illegal stamps, the Universal Postal Union introduced the WADP Numbering System (WNS) for new issues by UPU members.
Read more about this topic: Stamp Numbering System
Famous quotes containing the words official, numbering and/or systems:
“I thought it altogether proper that I should take a brief furlough from official duties at Washington to mingle with you here to-day as a comrade, because every President of the United States must realize that the strength of the Government, its defence in war, the army that is to muster under its banner when our Nation is assailed, is to be found here in the masses of our people.”
—Benjamin Harrison (1833–1901)
“The task he undertakes
Is numbering sands and drinking oceans dry.”
—William Shakespeare (1564–1616)
“I am beginning to suspect all elaborate and special systems of education. They seem to me to be built up on the supposition that every child is a kind of idiot who must be taught to think.”
—Anne Sullivan (1866–1936)