Whenever a bond is required for any amount, except as otherwise specifically provided, it shall be held and construed to mean a surety company bond with the licensee as principal and some surety company authorized to do business in the state, as surety. Such bond must be approved by the city attorney as to form, and by the city clerk as to sufficiency of the surety. (Ord. 295-74 Ch. 1 § 9(D), 1974.)