In 1964, the United Arab Republic (only Egypt, as Syria left the union is 1961), issues a series of 13 stamps with the flags. Each stamps featured the flag of one of the 13 Arab countries then members of the Arab league.
The stamps with flags were issued to commemorate the Fourth Arab Summit that gathered in Alexandria, Egypt on September 4, 1964.
One of the most important decisions of this summit was to welcome the establishment of the Palestine Liberation Organization, created by the first Palestinian National Council, held in Jerusalem in May 1964.
The stamp above bears the flag of the Hashemite kingdom of Jordan.
About the Hashemite kingdom of Jordan
Until WW I, the territory of Jordan was part of the Ottoman Empire for more than four centuries. It was occupied by the British troops during the war.
The League of Nations recognized the Hashemite kingdom of Jordan as an independent state in 1922 and put it under British mandate. The British government recognized the Prince Abdullah ibn Al-Hussein (1882-1951) as the Emir of Transjordan.
In March 1946, British government accepted the principle of the independence of Transjordan. Transjordan parliament meeting on 25 May 1946, proclaimed the independence of the country under the name of the Hashemite kingdom of Transjordan, and recognized the Emir Abdullah as its first king.
The country’s name changed to the Hashemite kingdom of Jordan in 1949.
Even before its formal independence, Jordan was one of the 7 founding states of the Arab League in 1945.
Yvert & Tellier: United Arab Republic YT-621