The Board of Finance is hereby authorized and empowered in its discretion to consolidate the several certificates of City stock or certificates of indebtedness held by it with any and every sinking fund under its care. City Code, 1879, art. 46, §19 1893, art. 47, §20 1927, art. 43, §19 1950, art. 34, §6 1966, art. 5, §19 1976/83, art. 5, §19 Ord. 46-406