The British Virgin Islands
were one of the presidencies of the Leeward Islands until it became a
colony in 1956. The island group is divided between Great Britain and
the United States (the Danish West Indies purchased by the United
States in 1917 to become the U.S. Virgin Islands).
The name "Tortola" means "Turtle Dove," and
it is the largest island in the group. The value of the stamp is
identified as "U.S. Cy" for U.S. Currency. Another stamp in this set
has a map showing all 36 islands of the group.
Zanzibar was a British
Protectorate until 1963 when it became independent. Following a
revolution in 1964 Zanzibar and Tanganyika became the United Republic
of Tanganyika and Zanzibar, which was later renamed Tanzania. Sultan
Khalifa bin Harub was the ceremonial head of state in Zanzibar, but
without real political power.