If the name and address of the owner and/or finder claiming an interest in an abandoned bicycle are known, service of the notice of disposition shall be accomplished by mailing a copy thereof, by ordinary mail, to said address. Service shall be complete upon mailing. If the name and address of the owner and/or finder claiming an interest are not known, service of the notice of disposition shall be by one publication of said notice of disposition in the official newspaper of the City. (Code 1962, § 11-18; Ord. No. G-1784, § 2)