The bonds shall be sold to the highest and best bidder for cash at public sale, or at private sale, after advertisement for public sales, and to the best advantage of the city. The city council shall have the option to authorize a private/negotiated sale without advertisement for public sale if the city manager has certified to the city council that such sale would be to the best advantage of the city. All bonds may contain provisions for calling the same at designated periods prior to maturity. (Ord. No. 87-201, § 1, 11-3-1987)