The faith and credit of the Mayor and City Council of Baltimore and its corporate property are hereby pledged for the redemption of its stock and certificates of indebtedness and the payment of interest thereon, at such times as may be specified in the ordinances authorizing the same. City Code, 1879, art. 46, §10 1893, art. 47, §10 1927, art. 43, §9 1950, art. 34, §4 1966, art. 5, §17 1976/83, art. 5, §17 Ord. 46-406