1976 Oklahoma Bicentennial 13c Stamp
Oklahoma 13-cent U.S. stamp - 1976 - American Bicentennial Issue: Flag Series
In observance of the American Bicentennial, a pane of stamps depicting the flag of each of the Union's fifty states was issued on February 23, 1976. The state flags are represented horizontally on the pane in the order in which they entered the Union.
