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The 2018 Flag Series stamps feature flags of eight United Nations member-states that have had flag design changes. The second four issued by the New York Office were Rwanda (admitted September 18, 1962, flag changed in 2001), Seychelles (admitted September 21, 1976, flag changed in 1996), South Africa (admitted November 7, 1945, flag changed in 1994), and Ukraine (admitted October 24, 1945, flag changed in 1992).
The 2018 Flag Series stamps feature flags of eight United Nations member-states that have had flag design changes. The second four issued by the New York Office were Rwanda (admitted September 18, 1962, flag changed in 2001), Seychelles (admitted September 21, 1976, flag changed in 1996), South Africa (admitted November 7, 1945, flag changed in 1994), and Ukraine (admitted October 24, 1945, flag changed in 1992).