39 CFR § 2.4 - Seal.
(a) The Seal of the Postal Service is filed by the Board in the Office of the Secretary of State, and is required by 39 U.S.C. 207 to be judicially noticed. The Seal shall be in the custody of the General Counsel, who shall affix it to all commissions of officers of the Postal Service, and use it to authenticate records of the Postal Service and for other official purposes. The following describes the Seal adopted for the Postal Service:
(1) A stylized bald eagle is poised for flight, facing to the viewer's right, above two horizontal bars between which are the words “U.S. MAIL”, surrounded by a square border with rounded corners consisting of the words “UNITED STATES POSTAL SERVICE” on the left, top, and right, and consisting of nine five-pointed stars on the base.
(2) The color representation of the Seal shows, a white field on which the bald eagle appears in dark blue, the words “U.S. MAIL” in black, the bar above the words in red, the bar below in blue, and the entire border consisting of the words “UNITED STATES POSTAL SERVICE” and stars in ochre.