On the first judicial day of each January and July, the City Recorder or Mayor, at the request of the Municipal Judge, shall prepare a jury list made by selecting by lot names from the latest tax roll and voter’s registration list used at the last preceding city election. The jury list shall contain the names of not less than 100 persons who shall comprise the jury list for the 6 months in which they are selected. The Municipal Judge or Mayor shall reject the names of persons selected for the jury list whom they know or believe to be unqualified as jurors because of mental or physical disability, or not otherwise possessing those qualifications for a juror as prescribed by the laws of this state. The jury list, when completed, shall contain the Christian name, surname, place of residence and occupation of each person named and the list shall be kept on file in the municipal court office. After the jury list has been completed, a card shall be prepared separately for each juror, and the cards when prepared shall be deposited in the office of the Municipal Judge in a sufficient box carefully secured, which shall be known as the jury box. If for any reason the preliminary jury list is not prepared within the aforesaid time, it may be prepared at a later time without affecting the validity thereof.