The official flag indicative of the office of Secretary of State shall be as follows: On a blue rectangular field a white disk bearing the official coat of arms of the United States adopted by the act of June 20, 1782, in proper colors. In each of the four corners a white five-pointed star with one point upward. The colors and automobile flag to be the same design, adding a white fringe. For the colors a cord and tassel of blue and white to be added. The sizes to be in accordance with military and naval customs.