No person shall wilfully or maliciously remove, destroy, mutilate or alter the number of any bicycle frame license pursuant to this chapter, or remove, destroy, mutilate or alter any license, seal or registration card during the time in which such license, seal or registration card is operative; provided, however, that nothing in this chapter shall prohibit the police department from stamping numbers on the frames of bicycles on which no serial numbers can be found, or on which said numbers are illegible or insufficient for identification purposes.
(Ord. 165 § 6, 1941; Ord. 958 § 3, 1985; Ord. 1099 § 6, 1989)