180.09 Notice of resolution or ordinance authorizing issuance of certificates.—Upon the adoption of resolution or ordinance by the city council, or other legislative body, by whatever name known, authorizing the issuance of mortgage revenue certificates or debentures, a notice thereof shall be published once a week for 2 consecutive weeks in a newspaper of general circulation in the county in which the municipality is located, or by posting a notice in at least three conspicuous places within the limits of the municipality, one of which shall be posted at the door of the city hall or city offices; provided, that if any of the mortgage revenue certificates or debentures are to be purchased by the United States of America, or any instrumentality or subdivision thereof, it shall not be necessary to advertise or offer the same for sale by competitive bidding.